If you can find a large body of good, permissively licensed example code, you can finetune an LLM on it!

There was a similar attempt for Godot script trained a few months ago, and its reportedly pretty good:

https://github.com/minosvasilias/godot-dodo

I think more attempts havent been made because base llama is not that great at coding in general, relative to its other strengths, and stuff like Starcoder has flown under the radar.