Test the updated refactoring.documentation proposal

[mjbvz]

Test for #86788

• Any @eamodio
• Any @roblourens

Complexity: 4

Background
The proposed CodeActionProviderMetadata.documentation lets extensions contribute documentation entries for specific a CodeActionKind

The documentation entries are rendered at the bottom of the completion list

Testing
Using the code action sample extension, try contributing some documentation. Specifically, try creating a documentation contribution for CodeActionKind.Refactor:

• Can you get the contribution to show up as expected?

• Make sure this entry only shows up when the code action provider is registered (and that unregistering the provider removes the documentation entry)

• For your test Refactor documentation, make sure that the entry only shows up when you would expect:

  • It should only show in the lightbulb menu if your provider returns at least one Refactoring code action,
  • It should always show up in the refactor menu.

• Try creating a documentation for some other cases, such a QuickFix to make sure these also follow the same rules.

• Try adding a more specific documentation entry for refactoring, such as RefactorExtract`.

  • Confirm that in this case, the most specific documentation entry should be shown