PR: Implement support for "CIECAM16" colour appearance model.

[KelSolaar]

Summary

This PR implements support for "CIECAM16" colour appearance model as given by CIE 248:2022.

References #1013.

Preflight

Code Style and Quality

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

Documentation

• New features are documented along with examples if relevant.
• The documentation is Sphinx and numpydoc compliant.

[coveralls]

Coverage increased (+0.001%) to 99.836% when pulling 859982c on feature/ciecam16 into 0e76a57 on develop.

[KelSolaar]

We do not compute hue composition because it is a bunch of Munsell Renotation System strings that are not super friendly for code that handles numbers mostly. I'm considering removing it from the various CAM specifications and provide a separate definition to compute it from hue/hue quadrature.