After talking with core contributors vnen and Faless, it seems we could get the GDScript compiler running in the browser and use that to check for user errors.

If we could get rid of the server entirely, that'd greatly improve the user experience - no more stalls, timeouts, or need for an internet connection. That'd allow us to distribute the app on desktop more easily too.

This task is about exploring this trail. I asked Faless if he'd have time to help, let's see his reply before working on this ourselves, as he would have a lot more experience with this.

This feature would also fix #310 and any connection issue, like the ones presented in #462.