Integrate native module for WindowsShellHelper

Make tree view data providers disposable
On main tree views disposed
- Deregister and dispose data providers

Implement smooth scrolling feature

* adopt the classifier;

Fix horizontal revealing of a range (in the smooth scrolling case where the line containing the range might come in the viewport at a later time)

* use `dom.scheduleAtNextAnimationFrame`

* Replace focussed with focused

* Replace Focussed with Focused

Fixes #32802
Fixes #31090

* have explicit methods for changing the scroll position (delayed/smooth vs now/direct) that bubble up to the editor internals.
* have all other clients of ScrollableElement not use smooth scrolling