Add Improved AI (Navmesh Overhaul Mod)

[jaens]

NavmeshOverhaul.esm should also be loaded before YUP, according to https://www.nexusmods.com/newvegas/mods/81003?tab=description but I see no way of specifying that?

---

NavmeshOverhaul.esm contains a check if "Uncut Wasteland" and "YUPNavMesh" is loaded at the same time, in which case it displays a warning.
Add the same warning and link to the workaround to LOOT as well.

[pStyl3]

@jaens There are a number of issues with this PR, that need to be worked out before we can merge it.

First, we add trailing slashes at the end of url's, and also add a name to them. So instead of writing

  - name: 'NavmeshOverhaul.esm'
    url: [ 'https://www.nexusmods.com/newvegas/mods/81003' ]

we would write

  - name: 'NavmeshOverhaul.esm'
    url:
      - link: 'https://www.nexusmods.com/newvegas/mods/81003/'
        name: 'Improved AI (Navmesh Overhaul Mod)'

Also, if we add data for more than one plugin from the same mod page, we can make use of regular expressions (see this link for an explanation) to add an url to them:

  - name: '(NavmeshOverhaul|YUPNavmeshPatch)\.esm'
    url:
      - link: 'https://www.nexusmods.com/newvegas/mods/81003/'
        name: 'Improved AI (Navmesh Overhaul Mod)'

  - name: 'NavmeshOverhaul.esm'
    group: *fixesGroup

  - name: 'YUPNavmeshPatch.esm'
    group: *fixesGroup
    inc:
    ...

When it comes to incompatible inc entries, we usually use one of the following structures:

  - name: 'Test.esp'
    inc:
      - 'Example 1.esp'
      - 'Example 2.esp'

  - name: 'CosmeticVampireOverhaul.esp'
    inc:
      - name: 'BVFE.esp'
        display: 'Fangs and Eyes - A Vampire Appearance Mod'

  - name: 'Book Covers Skyrim Updated.esp'
    inc:
      - name: 'LegacyoftheDragonborn.esm'
        condition: 'not checksum("Book Covers Skyrim Updated.esp", 6D8408E1)'

  - name: 'Lux - Eli Breezehome patch.esp'
    inc:
      - name: 'Eli_Breezehome.esp'
        display: 'Eli''s Breezehome Optimization'
        condition: 'version("Eli_Breezehome.esp", "1.6.0", >=)'

So as you can see, a plugin name Example.esp get's added as an inc entry just like that. Or it can also be added incapsulated as a name, with either a display or condition key attached (or both).

The detail key is usually used for the cleaning messages:

  # Cleaning Data Anchors
    - &quickClean
      util: '[SSEEdit](https://www.nexusmods.com/skyrimspecialedition/mods/164)'
      detail: 'A guide to cleaning plugins using xEdit can be found [here](https://tes5edit.github.io/docs/7-mod-cleaning-and-error-checking.html#ThreeEasyStepstocleanMods).'

    - &reqManualFix
      util: '[SSEEdit](https://www.nexusmods.com/skyrimspecialedition/mods/164)'
      detail: 'It is strongly recommended not to use mods that contain **deleted navmeshes** as they''re known to cause crashes. **Deleted navmeshes** must be corrected manually (a complex process that should be done by the mod author). More information on **deleted navmeshes** is provided [here](https://www.creationkit.com/index.php?title=Fixing_Navmesh_Deletion_Tutorial).'

Last but not least, creating and using a message anchor (&checkScript) is done in a different way. While we could add custom messages directly to plugins (and do so within a couple of places), we nowadays make the effort to check, if we either can reuse existing message anchors (see the Prelude for that), or create new ones that can be translated and as such, be understood by more people.

[pStyl3]

NavmeshOverhaul.esm should also be loaded before YUP, according to https://www.nexusmods.com/newvegas/mods/81003?tab=description but I see no way of specifying that?

That can be done by specifying that YUP must load after NavmeshOverhaul.esm. So it would probably be the best course of action to expand our following existing entry

  - name: 'YUP .*\.es[mp]'
    url:
      - link: 'https://www.nexusmods.com/newvegas/mods/51664/'
        name: 'Yukichigai Unofficial Patch - YUP'

by adding a load after to that. So:

  - name: 'YUP .*\.es[mp]'
    url:
      - link: 'https://www.nexusmods.com/newvegas/mods/51664/'
        name: 'Yukichigai Unofficial Patch - YUP'
    after: [ 'NavmeshOverhaul.esm' ]