Fixes #10659

Allows workspace edits to also change files in the workspace

**Bug**
We were using `edits` in some places and `edit` in others. This broke some use patterns for code actions

* Add CodeAction Type

Adds skeleton on a new CodeActionType and allows codeActionProvider to return either `Command`s or `CodeAction`s

Move proposed CodeAction API to proposed and try using it in TS

Split CodeAction into quickfix and refactoring classes

Update proposed interface

Update for new API

Adding basic docs

* Support workspace edits and text edits in codeactions

* Remove placeholders

* Resolving conflicts and making PR suggested changes

* Fix quick fix test

* Revert change to only use `CodeAction` instead of `CodeAction | Command` in modes since this will break `vscode.executeCodeActionProvider`

Fixes #27961

Adds a new `editor.lightbulb.enabled` setting to enable/disable the code actions lighbulb. You can still trigger code actions manually

also use the oppertunity to clean up, migrate to the new list widget etc