Add starter templates for github actions, pre-commit

[Josverl]

• Github Action : https://github.com/Josverl/mp_typecheck
• pre-commit

Yeah, I think that could be pretty useful. Some sort of starter templates for github actions, pre-commit, and local configuration would be super nice to have.

Originally posted by @yangdanny97 in pyscript/pyscript#2316 (reply in thread)