This change attempts to do the following:

- Encapsult most of the logic for handling the webviews used for webview editors into a new WebviewEditorOverlay class
- Greatly simplify WebviewEditorInput and make it take a webview when it is created
- Move the webview creation logic up into the webviewEditorService instead of having it be inside the webviewEditor class itself

This aim of these changes is to make it possible to re-use more of the webview logic for custom editors

We previously used nested states to store some additional metadata alongside the real webview state. This is overly complicated. This change switches us to using a single top level state field, while also adding some code to handle migration from the old state structure

This reverts commit 3000b68b.

Add the .rbi file extension as a Ruby file type

.rbi files are type definition files that are currently used by some
community type checkers, most notably Stripe's Sorbet,
and will be part of the main language in Ruby 3.

Save resourceColumn for previews, fixes #74008

Clear disposables in the clearInput method on Disposables

Fixed changes and refactored so method structures in the file are same, allowing the new method to fit naturally.

This reverts commit ce404be0b7b7d0c2c5675cf73311f7d5fdc52bfb.

This reverts commit 30d7dc8a3f5ef8a8d8a702da2dc4517a0f64f1d4.

This reverts commit b59ecadf6b1c3c84213b8300df8ba8ce962e6625.

This reverts commit ce17e06dc3849db00e377f221c9e98fc3f11ba6c.

This reverts commit ff8fc9aa75edd7d30d135ef49738754d421fa4fd.

This reverts commit b59ecadf6b1c3c84213b8300df8ba8ce962e6625.

[css] Upgrade service and add dynamic link support

* More strongly typed telemetry

* Updated update service to not duplicate typings