Deprecate Monaco Editor Webpack Plugin

The monaco editor webpack plugin is a maintenance burden and causes issues from time to time.
It provides "feature inclusion/exclusion" and automatic entry configuration for webworkers.

We should try to deprecate it and come up with a feature-selection and entry-discovery mechanism that works across all bundlers.

Feature-selection would be covered by

• https://github.com/microsoft/monaco-editor/issues/5151

For entry discovery, we could potentially come up with a new webpack plugin that automatically adds entries for new URL("./worker?esm", import.meta.url) references in the source code. This plugin is independent of the monaco editor and should also be provided for rollup/vite etc.