Support for Apple Pencil scribble

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. --> I would like to be able to use Apple Pencil's scribble function to type into VSCode while using it in Sidecar. Currently, it only works as a mouse. I tried it in http://codesandbox.io and it worked more as expected but there was a very annoying effect when writing sometimes it thinks it should scroll.