* Update paste and drop proposals
Reworks the document paste and drop API proposals. Main highlights:
- Align more with code action api
- Allow a single paste provider to return multiple edits
- Allow resolving applied edits lazily
- Switch from using ids to scoped kinds like used for code actions
* Adding paste context
* Add context
* Update test
Fixes#184980
This refactors much of the logic around markdown paste/drop. PR got a little large but the main highlights are:
- Allow using a custom snippet for inserted audio/video
- Merge the drop/paste resource provider classes since these are so similar
- Enable smart pasting of url text by default
- Refactor url paste logic
- For now, disable the behavior where url paste could paste a combination of markdown and plain uris. In practice this is confusing, especially because our labels for this were wrong. We can always reintroduce this later if multicursor users find it useful
