I'm currently exploring and using Godot and I'm super impressed by it. It's a fantastic piece of work in many regards.

Why would you want to sidestep the entire editor ecosystem and introduce a JS dependency to your game? Do it in GDScript/C++ instead and put it in the asset library where it belongs. If that's not possible, perhaps submit a pull request.

You do you of course, but promoting it on HN is implicitly saying that this is a good idea while it in fact works completely against the grain.