feat: store golua bytecode

[TorchedSammy]

https://pkg.go.dev/github.com/arnodel/golua@master/code#Unit

personal note - check if this is actually a viable way to improve startup
the method would be to just store a gob-encoded version of this type to a file and fetch it on subsequent DoFile calls instead of always compiling. i dont think itll work out well but ill find out