feat(publish) : create GHA that automates all publication steps and updates the database

[Josverl]

• need to decide if there is any use / need to use one of the poetry publish actions,
  or that the poetry cmdline is just as good for this
  • start using poetry cmdline for simplicity and initial debugging
  • destination PyPi / test-PyPi ( can be based on branch later on )
• in which Repo should this GHA workflow run ->: Stubs
• GH releases are not very useful in a multi-repo , ->: do not use releases
• decide if to check in all the sources of each stub (seems like a useful thing for troubleshooting)
• commit updates to the json DB directy
  https://github.com/EndBug/add-and-commit
  • avoid conflicts between different versions running in parallel
• run build in matrix
• run publish in matrix