[Feature] Make pybricks.parameters.Color subscriptable

[laurensvalk]

Is your feature request related to a problem? Please describe. See https://github.com/orgs/pybricks/discussions/1660#discussioncomment-9644088

Describe the solution you'd like It would be nice if this worked:

h, s, v = sensor.hsv()

That's nice in Python, and also allows it to be unpacked with blocks.

Describe alternatives you've considered Write a Python utility that the user imports.