Use RGB led as status led

**Describe the problem you have/What new integration you would like**

Some ESP boards have a RGB led instead of a "dumb led". Its not possible to use a RGB led as a status led at the moment. It would be nice if we can set a RGB led as status led, maybe with a fixed color.

**Please describe your use case for this integration and alternatives you've tried:**

Some boards that have a RGB light instead of a normal led are: (not exaustive, these are the ones that i know of) Wemos S3 Mini, S3, S3 PRO, C3 mini v2, C3 pico.
The only option now is to wire an external led on those boards if you want a status led

**Additional context**

I'm repeating myself but it would be nice to have a rgb light as a functional status led, even with a fixed color.
Would that be feasible?

Start by comparing the listed Wemos S3 and C3 boards and how their RGB LEDs are exposed. Review the existing status LED behavior and determine whether a fixed-color RGB status mode is feasible; done means the supported boards can use their onboard RGB LED as a status indicator.

Written by the indexing model from the issue text.