Publish the package when a tag is pushed

[gh640]

JRubics/poetry-publish is:

An action to build and publish python package to PyPI, TestPyPI or a private wheels repo using poetry.

• https://github.com/marketplace/actions/publish-python-poetry-package
• https://github.com/JRubics/poetry-publish

[gh640]

For poetry config, see:

• https://python-poetry.org/docs/repositories/