Creating a PyPi package

[bahorn]

This has been one of the main tasks I've been needing to do.

• Stabilise the API.
• Follow the PyPi guide to create the package
• Setup a GH action to push release tags to PyPi

[bahorn]

Ok, pushed the current revision to https://pypi.org/project/OpenRGB-PyClient

This API is still unstable so be careful!

[bahorn]

Added an action to the gh-actions branch based on pubmedpy's to push releases to PyPi.