Idea: Linting CI pipeline

[BytewaveMLP]

It would be nice to build a simple linting CI action, especially once the project goes fully public.

Consider using an opinionated linter like Moonpick to gain more control over linting. Unfortunately, GLuaFixer isn't much help here, as it doesn't work on Moonscript, and running it over the compiled Lua sources just seems like a bad idea. 🤔