- CLean up: Separate models and interfaces

- API to get a value given a key
- API to update value smartly
- Fine grained configuration change event
- Smart reload API
- Remove unnecessary APIs

Fixes #35492

fixes #35179

fixes #35153

#35525

fixes #35497

fixes #35497

[folding] Click in bottom part of editor expands last region regardless of where focus is. Fixes #35259

* debt - syncdescriptors for composite

* debt - syncdescriptor for baseeditor

* debt - syncdescriptor for quickopenhandler

* debt - remove asyncdescriptor

* debt - introduce editor.ts in browser namespace

* fix todos

variables and stack frames no longer use reference for id
try to preserve expansion state across stapes

fixes #16031