clean up monaco.d.ts

Updated color API and color info conversion between extHost and main. Added color picker disposal, more listeners.

* Add CompletionItemKind.Folder

Fixes #17435

Adds a new completion item kind for folder/directories. This is useful for path intellisense

For the icons, I copied the icons for folders into the suggestion icon set. Let me know if new ones are needed instead.

* Fix monaco.d.ts

debt - no guessing-caching, better use of gc-signals, command converter using gc-signals, main side heap service

This reverts commit 2d1c94ab.