GitHub Action to spellcheck and lint Python code

[cclauss]

This Action uses minimal steps to run in ~5 seconds to rapidly:

• use codespell to look for typos in the codebase, and
• use ruff to lint Python code and provide intuitive GitHub Annotations to contributors.

Tools:

• https://github.com/codespell-project/codespell#readme
• https://docs.astral.sh/ruff

@RossBencina

[RossBencina]

I'd prefer to consider the python fixes and the CI workflow as separate PRs.

The fixes are uncontroversial and can me merged as is (although maybe an additional improvement is to explicitly scope the pylab symbols).

The CI I'm not sure about due to imposing linting opinions that I have no idea about since I've never used ruff or codespell.

[cclauss]

Removed the CI workflow.

[RossBencina]

Thank you!