Pre-commit configuration for codespell

[yarikoptic]

For

• Add codespell: config + action (to detect new typos) and make it fix a good number of them readthedocs.org#11195

custom exclude needed due to

• "Interaction" with pre-commit: ideally should skip the skipped files. codespell-project/codespell#3196

[humitos]

This is good! I tested it locally and it works great!