Create an action to publish to pypi when we make a release

[mattldawson]

Add an action that publishes the MUSICA Python wrapper to pypi for each release.

Acceptance Criteria

• The MUSICA Python package is deployed to pypi on each commit to the release branch

Ideas

• Follow the logic here and here
• Apparently, can set up publishers with pypi so that we don't need to store a token
• Investigate whether it's possible to have the version number in just one place, instead of in both the CMakeLists.txt file and pyproject.toml

[WardF]

This was part of the discussion we had had @K20shores if I'm not mistaken, should I take this on as well?

[K20shores]

@WardF yes, but also I ended up workin on this last week and #184, I think, accomplishes this