Follow godot name conventions

[scriptsengineer]

File names and scripts must follow godot conventions https://docs.godotengine.org/en/latest/tutorials/best_practices/project_organization.html

I can do a pr with this if needed

[KoBeWi]

Well they don't must follow them, it's just a guideline that you can apply or not. I use PascalCase for my files. Addons are "separate" from the user's project, they even don't show warnings by default and they can follow any naming conventions the author desires.