Feat: Disable plugins

[jessebofill]

Please tick as appropriate:

• [x] I have tested this code on a steam deck or on a PC
• [x] My changes generate no new errors/warnings
• [ ] This is a bugfix/hotfix
• [x] This is a new feature

Description

This pr implements the ability to disable plugins. Pretty self explanatory.

Resolves issue #350

Discussion relating to implementation can be found here for reference. https://discord.com/channels/960281551428522045/1424643765888352339

Additional changes

• Inlcudes changes from PR #816 as requested.
• Adds 15s timeout to frontend importPlugin call. This is to prevent a hung request to load js from blocking other plugins from loading. This bug is discussed in this thread https://discord.com/channels/960281551428522045/1424643765888352339/1425181590522429550

[EMERALD0874]

Approving workflow for testing :)

[LeXofLeviafan]

@jessebofill the linter is failing; you may want to adjust your formatting in the files which it didn't like.

…Incidentally, will update checks still work with the disabled plugins? A major reason to use this functionality (IMO) is to disable plugins broken by a Steam UI update until they support the changes (instead of uninstalling them); and I'd prefer not having to re-enable the plugin manually every day just to check if it had a fix release since.

[LeXofLeviafan]

Solves issue #350

You may want to adjust your wording here :thinking:

[jessebofill]

@jessebofill the linter is failing; you may want to adjust your formatting in the files which it didn't like.

…Incidentally, will update checks still work with the disabled plugins? A major reason to use this functionality (IMO) is to disable plugins broken by a Steam UI update until they support the changes (instead of uninstalling them); and I'd prefer not having to re-enable the plugin manually every day just to check if it had a fix release since.

Yes, they still get checked for updates while a plugin is disabled.