Load Monaco Files From Node Modules Folder

[jameskerr]

Fixes #2915

The editor now loads without an internet connection. Instead of reaching out to a CDN, electron intercepts the request and serves it from node modules.

Here is the editor loaded.

And here is the sources tab revealing no network requests.

In order to get this working properly in development, I had to disable web security in the browser windows to allow for cross-origin javascript requests. This is only needed in development because we serve the html from a dev server. In production we serve the files from the same origin that we serve the monaco files, so they are on the same origin already.

I would love to test this in a release to make sure I stitched all the paths together correctly in a release environment.

[philrz]

I tested this out on Windows using an artifact from this Actions run and the editor came up fine with my Internet disconnected. LGTM! 👍

[jameskerr]

Nice!