Implement plugin updates with `IPluginUpdates` interface

[JustArchi]

Code is done, but untested, I'll make this PR ready for review when I ensure it works as expected.

TODO:

• [x] Testing
• [x] More strings
• [x] Localization
• [ ] Change plugin template to follow root-less zip structure
• [ ] Make plugin template implement new interface

[github-actions[bot]]

Qodana for .NET

7 new problems were found

Inspection name	Severity	Problems
RoslynAnalyzers Do not catch general exception types	◽️ Notice	6
RoslynAnalyzers Enum Storage should be Int32	◽️ Notice	1

💡 Qodana analysis was run in the pull request mode: only the changed files were checked ☁️ View the detailed Qodana report

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[Abrynos]

I like where this is going.