* Webview api

* Cleaning up markdown webview

* Hooking up dispose

* Fix some merge errors

* Use custom context key to show markdown title bar contributions

* Add basic on focus and on blur events

* Fixing find widget in webview

* Hookup _isDisposed

* Use new extension resource scheme to load markdown extension resources

* Documenting keep alive

Fixes #43379

Fixes #43138

**Bug**
Pinch opening should zoom in. Pinch close shoud zoom out. This is currently reversed

**Fix**
Invert the pinch direction. Only inverts pinches. Scrollwhell events should remain as-is: scroll up to zoom in scroll back to zoom out

* Fix #39417

* Use pseudo elements instead of mask-image so that labels retain subpixel AA

* Use ellipsis and disable fade for HC theme, and support hover colours

* Make requested changes and start on fixing transparency issue

* Merge all colours underneath tabs to fix transparency issue

* Rename color function, move workbench background into themes

* do not allow to change workbench background

* 💄

* fix npes and clean up

* fix class names

* remove blank line

Fixes #42482

Fixes #42486

Fixes #42484

Fixes #42442

fixes #42612

fixes #42337

fixes #42158

fixes #41986