Expand type hints to include optional dependencies such as `colour` or named colors

[hx2A]

Ref: #618

Color parameters support colour.Color objects and also named colors. Can py5generator be expanded to include these in the type hints?

This would need to work if the optional libraries are not installed.

py5generator's CodeBuilder class would need to know to build extra type hints.

A good solution would also work for py5's shapely and trimesh integrations.