Add support of gpio raspberrypi and ReSpeaker-2-Mics-Pi-HAT

just had an idea that could be nice and i think quite easy to implement
instead of having sounds to let the user connect a rgb led to show wake/listenning/error status
and since lots of ppl are using the seeedstudio ReSpeaker-2-Mics-Pi-HAT ( ordered one few days ago waiting for it ) the board also have leds on it (3 APA102 RGB LEDs)

just an idea :slight_smile:

It already exists: Hermes Led Control.

cool ! thanks for the link :slight_smile: