Add pre-commit hook and GHA workflow to apply `black` linter to Python files

[jhlegarreta]

Description

Add a pre-commit hook and GHA workflow to apply the black linter to Python files.

Expected coding style

ITK contains numerous Python files: by applying a pre-commit hook and GHA workflow to apply the black linter to such files would improve readability across such files by standardizing their style.

Actual coding style

No Python linter is applied other than the one done locally by some maintainers and contributors.

Versions

master.

Additional Information

N/A.

[thewtex]

#xref #4235, which does have a black linter, but the ruff linter does the same and more, so it may be sufficient.

[jhlegarreta]

@hjmjohnson In PR #5013 you mentioned that PR was related to this issue. I have revisited the PR, and I'd say that the pre-commit hook is doing its job concerning this. If we eventually adopt ruff, the style may change, but the linting will still take place. So, @hjmjohnson feel free to close this.

[hjmjohnson]

This is now done with pre-commit hooks --- this is implemented with commit 6fd13e1