Add metadata to BasicGameSaveGameInfo(Widget)

[ZashIn]

Adds optional metadata to the BasicGameSaveGameInfoWidget, similar to TES / Gamebryo games:

BasicGameSaveGameInfo()  # Adds "File Date" by default
BasicGameSaveGameInfo(
    get_preview = lambda p: Path(p, "screenshot.png"), # Save preview
    get_metadata = lambda p, save: {"Name": save.getName(), ...}
)

Example from Cyberpunk 2077, included in #105:

Adds a default file date to all BasicGames, taken from the save game files (GameSaveExtension etc.)

[Holt59]

Sorry for the delay, could you try rebasing/merging against latest master so that these change can be merged? If you don't have time, I can have a look at it myself.

[ZashIn]

Sorry for the delay, could you try rebasing/merging against latest master so that these change can be merged? If you don't have time, I can have a look at it myself.

I can probably get to it tomorrow, have to check python 11 changes (my local poetry will be conflicting, too).
If I remember correctly, I made this as backwards compatible as possible, but there is at least one game, which implements BasicGameSaveGameInfoWidget, that should be tested.

From a quick search that would still be only: Black & White 2.

[ZashIn]

Rebase done. No problems besides the ugly None vs default param checks above.

[Holt59]

Thanks for the update!

@Silarn Added save metadata preview to Blade & Sorcery recently, could you see if these could be moved to your new generic metadata system?

[Silarn]

Obviously this would need to be merged in first but yeah, I think you can just migrate the BaSSaveGameWidget code to a new 'bas_parse_metadata' function passed into the updated BasicSaveGameInfo.

[ZashIn]

Obviously this would need to be merged in first but yeah, I think you can just migrate the BaSSaveGameWidget code to a new 'bas_parse_metadata' function passed into the updated BasicSaveGameInfo.

I added an option to set the (max) widget width and refactored blade & sorcery, should work.
Cleaned up Black & White 2, since it was not actually using its minimal custom widget.

Want me to cleanup the history before merge?

[ZashIn]

Ok, widget size, default parameter handling and an easier option to set a custom widget added:
BasicGameSaveGameInfo.with_widget(ISaveGameInfoWidget)

Widget tested with Cyberpunk.
A test for Blade & Sorcery would be good, with only the metadata.

[Silarn]

Unfortunately I was having a requester on Discord test my initial changes. But I might be able to get a hold of him.

[ZashIn]

Commits cleaned up. Ready to merge (Blade & Sorcery tested, too).

[ZashIn]

I removed Cyberpunk BasicGameSaveGameInfo from this PR, to be included in #105.

[ZashIn]

Rebased on master, with PR #122, rdy for merge.