Add support for APKBUILD

- Reducing duplicated code
- Clearer event names
- Extract methods
- Store data instead of requests

Code inset fix

Hooks up a prototype of how we could support some types of port mapping inside of webviews. It uses the same service-worker based approach that we use for loading local resources inside of webviews.

This does not work for loading iframes however as iframe `src` requests go to the service worker of the `src` origin (not the service worker of the parent that contains the iframe). Not sure if this can be worked around. Two alternatives if we can't:

* Add api for getting the mapped port.
* Dynamically rewrite the input html

Both are not ideal as they may require eagerly opening tunnels (we open them lazily at the moment)

Also removes telemetry on which extensions were using localhost resources as it is no longer required

Fixes microsoft/vscode-remote-release#168

* move keybinding validator out of keybindingRegistry

* Fullscreen Action.

* use webkit full screen.

* Address comments

* align typings

Fixes #74336

Support Windows on web