Fix typos discovered by codespell

[cclauss]

Summary

Fix typos discovered by codespell

• https://pypi.org/project/codespell

Add pre-commit for running codespell and ruff on all code changes.

• https://pre-commit.com

- Loding  the equivelent dependancy to accodomate  prefered  seperators is unwieldly.
+ Loading the equivalent dependency to accommodate preferred separators is unwieldy.

Checklist

• [x] I understand that this PR may be closed in case there was no previous discussion. (This doesn't apply to typos!)
• [x] I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• [ ] I've updated the documentation accordingly.

[lovelydinosaur]

Fix typos

This part would be good, thanks.

Add pre-commit for running codespell and ruff on all code changes.

Not sure about that. Prefer not to introduce additional tooling where possible. To be considered separately.

[cclauss]

Delete .pre-commit-config.yaml ✅