Add autotest for Solo mount #31756

Job	Run time
build (chibios, Durandal)	19m 1s
build (chibios, MatekF405)	17m 13s
build (chibios, KakuteF7)	15m 49s
build (chibios, MatekH743-bdshot)	19m 15s
build (chibios, Pixhawk1-1M)	17m 8s
build (chibios, MatekF405-CAN)	3m 50s
build (chibios, DrotekP3Pro)	4m 21s
build (chibios, Hitec-Airspeed)	5m 37s
build (chibios, f103-GPS)	5m 24s
build (disco, armhf)	15m 39s
	2h 3m 17s

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