PR: Enable all relevant *Ruff* checks.

[KelSolaar]

Summary

This PR enables all the (autocratically deemed) relevant Ruff checks. Typing annotations have been added to the unit tests, implying that all the codebase is now checked by Pyright. All fixes are enabled by default. I will apply the same config to all the other colour-science repositories.

Preflight

Code Style and Quality

• Unit tests have been implemented and passed.
• Pyright static checking has been run and passed.
• Pre-commit hooks have been run and passed.
• [N/A] New transformations have been added to the Automatic Colour Conversion Graph.
• [N/A] New transformations have been exported to the relevant namespaces, e.g. colour, colour.models.

Documentation

• [N/A] New features are documented along with examples if relevant.
• The documentation is Sphinx and numpydoc compliant.