Add i3wm ansible files with config.

* Deploy i3 packages.
* Added configs.
* Define virtual screenlayouts to split 4k monitor for presentations.
* Define layouts to be used on startup.
* Added notification config.

bash/.config/i3/config

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+# This file has been auto-generated by i3-config-wizard(1).
+# It will not be overwritten, so edit it as you like.
+#
+# Should you change your keyboard layout some time, delete
+# this file and re-run i3-config-wizard(1).
+#
+
+# i3 config file (v4)
+#
+# Please see https://i3wm.org/docs/userguide.html for a complete reference!
+
+set $mod Mod4
+
+# Font for window titles. Will also be used by the bar unless a different font
+# is used in the bar {} block below.
+font pango:monospace 8
+
+# This font is widely installed, provides lots of unicode glyphs, right-to-left
+# text rendering and scalability on retina/hidpi displays (thanks to pango).
+#font pango:DejaVu Sans Mono 8
+
+# The combination of xss-lock, nm-applet and pactl is a popular choice, so
+# they are included here as an example. Modify as you see fit.
+
+# xss-lock grabs a logind suspend inhibit lock and will use i3lock to lock the
+# screen before suspend. Use loginctl lock-session to lock your screen.
+exec --no-startup-id xss-lock --transfer-sleep-lock -- i3lock --nofork
+
+# NetworkManager is the most popular way to manage wireless networks on Linux,
+# and nm-applet is a desktop environment-independent system tray GUI for it.
+exec --no-startup-id nm-applet
+
+
+## Colours: https://i3wm.org/docs/userguide.html#_changing_colors
+# class                 border  backgr. text    indicator child_border
+client.focused          #4c7899 #285577 #ffffff #2e9ef4   #285577
+client.focused_inactive #333333 #5f676a #ffffff #484e50   #5f676a
+client.unfocused        #333333 #222222 #888888 #292d2e   #222222
+client.urgent           #2f343a #900000 #ffffff #900000   #900000
+client.placeholder      #000000 #0c0c0c #ffffff #000000   #0c0c0c
+
+client.background       #ffffff
+## Borders: https://i3wm.org/docs/userguide.html#_default_border_style_for_new_windows
+default_border pixel 3
+for_window [class=".*"] border pixel 3
+
+
+# Use pactl to adjust volume in PulseAudio.
+set $refresh_i3status killall -SIGUSR1 i3status
+bindsym XF86AudioRaiseVolume exec --no-startup-id pactl set-sink-volume @DEFAULT_SINK@ +10% && $refresh_i3status
+bindsym XF86AudioLowerVolume exec --no-startup-id pactl set-sink-volume @DEFAULT_SINK@ -10% && $refresh_i3status
+bindsym XF86AudioMute exec --no-startup-id pactl set-sink-mute @DEFAULT_SINK@ toggle && $refresh_i3status
+bindsym XF86AudioMicMute exec --no-startup-id pactl set-source-mute @DEFAULT_SOURCE@ toggle && $refresh_i3status
+bindsym $mod+Shift+p exec pulsemixer
+
+# Use Mouse+$mod to drag floating windows to their wanted position
+floating_modifier $mod
+
+# start a terminal
+# bindsym $mod+Return exec i3-sensible-terminal
+bindsym $mod+Return exec xfce4-terminal
+
+# kill focused window
+bindsym $mod+Shift+q kill
+
+# start dmenu (a program launcher)
+bindsym $mod+d exec dmenu_run
+bindsym $mod+space exec dmenu_run
+# There also is the (new) i3-dmenu-desktop which only displays applications
+# shipping a .desktop file. It is a wrapper around dmenu, so you need that
+# installed.
+# bindsym $mod+d exec --no-startup-id i3-dmenu-desktop
+
+# change focus
+bindsym $mod+j focus left
+bindsym $mod+k focus down
+bindsym $mod+l focus up
+bindsym $mod+semicolon focus right
+
+# alternatively, you can use the cursor keys:
+bindsym $mod+Left focus left
+bindsym $mod+Down focus down
+bindsym $mod+Up focus up
+bindsym $mod+Right focus right
+
+# move focused window
+bindsym $mod+Shift+j move left
+bindsym $mod+Shift+k move down
+bindsym $mod+Shift+l move up
+bindsym $mod+Shift+semicolon move right
+
+# alternatively, you can use the cursor keys:
+bindsym $mod+Shift+Left move left
+bindsym $mod+Shift+Down move down
+bindsym $mod+Shift+Up move up
+bindsym $mod+Shift+Right move right
+
+# split in horizontal orientation
+bindsym $mod+h split h
+
+# split in vertical orientation
+bindsym $mod+v split v
+
+# enter fullscreen mode for the focused container
+bindsym $mod+f fullscreen toggle
+
+# change container layout (stacked, tabbed, toggle split)
+bindsym $mod+s layout stacking
+bindsym $mod+w layout tabbed
+bindsym $mod+e layout toggle split
+
+# toggle tiling / floating
+bindsym $mod+Shift+space floating toggle
+
+# change focus between tiling / floating windows
+# bindsym $mod+space focus mode_toggle
+
+# focus the parent container
+bindsym $mod+a focus parent
+
+# focus the child container
+#bindsym $mod+d focus child
+
+# Define names for default workspaces for which we configure key bindings later on.
+# We use variables to avoid repeating the names in multiple places.
+set $ws1 "1 - Work/Calls"
+set $ws2 "2 - Presentation"
+set $ws3 "3 - Browser"
+set $ws4 "4"
+set $ws5 "5"
+set $ws6 "6"
+set $ws7 "7"
+set $ws8 "8"
+set $ws9 "9"
+set $ws10 "10"
+
+# switch to workspace
+bindsym $mod+1 workspace $ws1
+bindsym $mod+2 workspace $ws2
+bindsym $mod+3 workspace $ws3
+bindsym $mod+4 workspace number $ws4
+bindsym $mod+5 workspace number $ws5
+bindsym $mod+6 workspace number $ws6
+bindsym $mod+7 workspace number $ws7
+bindsym $mod+8 workspace number $ws8
+bindsym $mod+9 workspace number $ws9
+bindsym $mod+0 workspace number $ws10
+
+# move focused container to workspace
+bindsym $mod+Shift+1 move container to workspace $ws1
+bindsym $mod+Shift+2 move container to workspace $ws2
+bindsym $mod+Shift+3 move container to workspace $ws3
+bindsym $mod+Shift+4 move container to workspace number $ws4
+bindsym $mod+Shift+5 move container to workspace number $ws5
+bindsym $mod+Shift+6 move container to workspace number $ws6
+bindsym $mod+Shift+7 move container to workspace number $ws7
+bindsym $mod+Shift+8 move container to workspace number $ws8
+bindsym $mod+Shift+9 move container to workspace number $ws9
+bindsym $mod+Shift+0 move container to workspace number $ws10
+
+# Change display.
+bindsym $mod+F4 exec "~/.screenlayout/single_monitor_4k.sh"
+bindsym $mod+F5 exec "~/.screenlayout/single_monitor_3_splits_4k.sh"
+
+# reload the configuration file
+bindsym $mod+Shift+c reload
+# restart i3 inplace (preserves your layout/session, can be used to upgrade i3)
+bindsym $mod+Shift+r restart
+# exit i3 (logs you out of your X session)
+bindsym $mod+Shift+e exec "i3-nagbar -t warning -m 'You pressed the exit shortcut. Do you really want to exit i3? This will end your X session.' -B 'Yes, exit i3' 'i3-msg exit'"
+# lock screen
+bindsym $mod+Ctrl+l exec i3lock --color=#111111 -f
+
+# resize window (you can also use the mouse for that)
+mode "resize" {
+        # These bindings trigger as soon as you enter the resize mode
+
+        # Pressing left will shrink the window’s width.
+        # Pressing right will grow the window’s width.
+        # Pressing up will shrink the window’s height.
+        # Pressing down will grow the window’s height.
+        bindsym j resize shrink width 10 px or 10 ppt
+        bindsym k resize grow height 10 px or 10 ppt
+        bindsym l resize shrink height 10 px or 10 ppt
+        bindsym semicolon resize grow width 10 px or 10 ppt
+
+        # same bindings, but for the arrow keys
+        bindsym Left resize shrink width 10 px or 10 ppt
+        bindsym Down resize grow height 10 px or 10 ppt
+        bindsym Up resize shrink height 10 px or 10 ppt
+        bindsym Right resize grow width 10 px or 10 ppt
+
+        # back to normal: Enter or Escape or $mod+r
+        bindsym Return mode "default"
+        bindsym Escape mode "default"
+        bindsym $mod+r mode "default"
+}
+
+bindsym $mod+r mode "resize"
+bindsym $mod+u resize shrink width 10 px or 10 ppt
+bindsym $mod+i resize grow height 10 px or 10 ppt
+bindsym $mod+o resize shrink height 10 px or 10 ppt
+bindsym $mod+p resize grow width 10 px or 10 ppt
+
+# Start i3bar to display a workspace bar (plus the system information i3status
+# finds out, if available)
+exec ~/.config/i3/write_status.sh
+bar {
+#        status_command i3status
+        status_command i3status --config ~/.config/i3/i3-status.config
+}
+
+## https://i3wm.org/docs/layout-saving.html
+exec --no-startup-id "i3-msg 'workspace 1; append_layout ~/.config/i3/workspace-1_edited.json'"
+# exec xfce4-terminal
+exec "tmux attach || ~/./dev-tmux"
+# Sleep to avoid the first tmux window being stuck at a tiny window inside the
+# tmux pane.
+exec sleep 1; xfce4-terminal -e "tmux attach"
+# This works with other terminals, but working around by calling outside of terminal:
+# exec uxterm -e "tmux attach || ~/./dev-tmux"
+exec sleep 1; opera
+exec --no-startup-id teams
+
+## get class names from `xprop` and then clicking on a window.
+# assign [class="Xfce4-terminal"] $ws1
+# assign [class="Opera"] $ws1
+# assign [class="Microsoft Teams - Preview"] $ws1
+
+## Note: Teams titles, still floats the main app, where the aim was to just
+## float pop-out message windows.
+# for_window [ title="" ] floating enable  # Float by `WM_NAME`.
+# for_window [ class="<right-of-comma>" instance="<left-of-comma>" ] floating enable  # Float by `WM_CLASS`.

bash/.config/i3/i3-status.config

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+general {
+        colors = true
+        interval = 5
+}
+
+order += "read_file TODOORG"
+order += "read_file SPOTIFYD"
+# order += "read_file BRIGHTNESS"
+order += "volume master"
+order += "cpu_usage"
+order += "disk /"
+order += "wireless _first_"
+order += "ethernet _first_"
+order += "battery all"
+order += "memory"
+order += "load"
+order += "tztime local"
+
+read_file TODOORG {
+        format = "TODO %content"
+        path = "/tmp/i3/status/todo_org"
+}
+
+read_file SPOTIFYD {
+        format = "%content"
+        path = "/tmp/i3/status/spotifyd"
+}
+
+volume master {
+        format = "VOL %volume"
+        format_muted = "VOL muted"
+        device = "default"
+        mixer = "Master"
+        mixer_idx = 0
+}
+
+read_file BRIGHTNESS {
+        format = "BRI %content%"
+        path = "~/.config/brightness"
+        max_characters = 5
+}
+
+cpu_usage {
+        format= "CPU %usage <%cpu0 %cpu1>"
+        max_threshold= 75
+}
+
+wireless _first_ {
+        format_up = "W (%quality at %essid, %bitrate) %ip"
+        format_down = ""
+}
+
+ethernet _first_ {
+        format_up = "E %ip (%speed)"
+        format_down = ""
+}
+
+battery all {
+        format = "%status %percentage %remaining %emptytime"
+        format_down = ""
+        status_chr = "CHR"
+        status_bat = "BAT"
+        status_unk = "UNK"
+        status_full = "FULL"
+        path = "/sys/class/power_supply/BAT%d/uevent"
+        low_threshold = 10
+}
+
+tztime local {
+        format = "%Y-%m-%d %H:%M"
+}
+
+load {
+        format = "%1min %5min %15min"
+}
+
+memory {
+        format = "MEM %percentage_used"
+        threshold_degraded = "10%"
+        format_degraded = "MEMORY: %free"
+}
+
+disk "/" {
+        format = "HDD %percentage_used"
+}