Define package versioning and releases to support test releases for best practices repo

[tim-schilling]

Currently the best practices repo uses semvar with an environment variable for dev versioning to support uploads to testpypi.

[mihrab34]

Hi @tim-schilling could i get clarity on which of the repo we are documenting on. Is it this one or the best practices repo

[cunla]

Hi @mihrab34, that's a good question.

In my opinion, I think having it "closer" to the code, with mechanisms, and explanations in the README file is better, i.e., having it in best practices.

Then we can add in the documentation website (in this repo) a section about Versioning that would point to the relevant info in the best-practices repo.