Feature improvements

[heyx3]

I work for a company that wanted to use this project, and in the process of integrating it, I've managed to clean up some parts of it. I figured I'd submit the changes back to the original repo.

The things this PR changes are:

• Removed the .meta files, which would only be useful if some of these scripts were MonoBehaviours and those MonoBehaviours were used in a Prefab/GameObject somewhere in the repo.
• Removed the commented-out python code (and some commented-out C# code, mainly debug outputs).
• Changed the sample .projmods file to have a ".projmods.sample" extension. When I first used this repo, I was unknowingly using this file along with the .projmods file I intended to use, simply because i didn't realize it was sitting in the repo. With this new extension, there's no risk of somebody else making the same mistake.
• It seems like some files and lines of code weren't actually used, so I removed them.

[dcariola]

Thanks for the support, I'll review the pull request asap

[Mehul24]

Is this getting merged anytime soon? Would love to merge in the cleaned version.