add studiolab_picoexpander #17448

Job	Run time
scheduler	57s
mpy-cross-mac	41s
mpy-cross / build (static-raspbian)	46s
docs	13m 32s
tests / run (mpy)	37s
mpy-cross / build (static-aarch64)	48s
tests / run (all)	1m 6s
mpy-cross / build (static-mingw)	47s
tests / run (native)	52s
mpy-cross / build (static)	21s
tests / run (native_mpy)	38s
windows	0s
windows-zephyr	0s
ports (raspberrypi) / board (studiolab_picoexpander)	2m 43s
	23m 48s

Provide feedback