Add GitHub action to publish wheels to PyPi / TestPyPi

**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
We already have a GitHub workflow that builds wheels when the repo is tagged with a release tag or rc tag. Hoever, we have to manually download these files and upload them to PyPi and TestPyPi.

**Describe the solution you'd like**
I would like this automated.

**Describe alternatives you've considered**
Keep doing it manually

**Additional context**