fix naming conventions

[SwadicalRag]

The exposed C++<->Lua api is fairly consistent, but the pure Lua API is messy as fuck.

Here's how I'm doing it:

• local vars are simpleCaseCamelCased
• global vars are UpperCaseCamelCased, with the exception of gm_voxelate
• class methods are UpperCaseCamelCased
• avoid using snake_case because it looks weird af tbh

Thoughts @birdbrainswagtrain ?

[MDFL64]

Sounds good to me. I have some additional minor name changes that I might make to the lua API. I also might continue using sexy_snake_case for locals because that's how I roll.

[SwadicalRag]

all good as long as the exposed API is consistent :v