This reverts commit 28a1bc2f.

Fix #122675

Fixes #122634

Fix #122645

* Add flag on whether a contribution can support a resource

* implement `canSupportResource`

* Fixed out of scope variable

* Fix unit test failure
Co-authored-by: NJohannes Rieken <johannes.rieken@gmail.com>

This reverts commit 9064c909.

Fixes https://github.com/microsoft/vscode/issues/122661

This reverts commit e2c5ff9d.

Fixes #122602

- Add snippet
- Use markdown string for strings that use backticks
- Add enum descriptions for `supported`
- Mark `supported` as being required

Fixes #122605

This reverts commit 06694a8e, reversing
changes made to 36fe8423.

- Use markdown
- Use link

Fixes https://github.com/microsoft/vscode/issues/118267

Now enabled by default