feat: Make suspension settings into per-deck options

[RisingOrange]

Make the card suspension settings into per-deck options. (Currently they are global options for all deck).

Related issues

Make the card suspension settings per-deck, add them to the new Deck Management dialog

Proposed changes

• Move the two options related to suspending cards from the general configuration dialog to the new decks dialog.
• Change the logic for suspending cards in the importer to use the per-deck option, instead of the global one.
• Update usages of AnkiHubImporter.import_ankihub_deck to pass in the new arguments for the suspension options.

How to reproduce

On the main Anki window, open the AnkiHub menu and click on Deck Management to reach the dialog shown below.

Screenshots and videos

[pedroven]

I noticed some issues when I was testing this PR:

• if I unsubscribe from the addon the deck will not appear anymore in the list of subscribed decks even if I subscribe to the same deck again, is that intended? Update: After I click in sync, the deck appeared again
• The default option is set to "Always" instead of ”Suspend new cards of new notes”
• When I change the option from "Always" to "Never" and then open "Deck Management" again the option selected remains as "Always"

[RisingOrange]

@pedroven

if I unsubscribe from the addon the deck will not appear anymore in the list of subscribed decks even if I subscribe to the same deck again, is that intended? Update: After I click in sync, the deck appeared again

This is because only installed decks are showed in the list in the Deck Management Dialog now. Previously we were showing all subscribed decks, even if they are not installed. You could sync with AnkiHub to install the deck again and then it would show up in the list.
I agree that this is a bit confusing, because it says Subscribed AnkiHub Decks, but it doesn't really show all subscribed decks. I will discuss with the product team how to solve this, because we don't want to show options for decks that are not installed.

The default option is set to "Always" instead of ”Suspend new cards of new notes”

When I change the option from "Always" to "Never" and then open "Deck Management" again the option selected remains as "Always"

Good catch! I fixed this now in 289178e.

The base branch was changed.

[RisingOrange]

@pedroven Since the last review I merged in the refactor of the ui setup of the dialog from #777 and refactored the setup of the the suspension options as well to make it more readable.