Add rust code to burny_common via pyo3

[BurnySc2]

Add rust example code and how to ship it to pypi as a package.
Use pyo3 and maturin according to this video
Idea: keep a rust and python source code file which are identically to be able to maintain the rust code when you only know python

Edit:
Use nim instead - seems much easier
https://github.com/Pebaz/nimporter
https://github.com/yglukhov/nimpy