AHRS: add ability to configure AHRS via mavlink commands #45048

Job	Run time
build (stm32f7, chibios, 10)	12m 7s
build (stm32h7, chibios, 10)	11m 12s
build (fmuv2-plane, chibios, 10)	4m 54s
build (periph-build, chibios, 10)	9m 4s
build (iofirmware, chibios, 10)	1m 43s
build (CubeOrange-bootloader, chibios, 10)	48s
build (fmuv3-bootloader, chibios, 10)	48s
build (revo-bootloader, chibios, 10)	53s
build (stm32h7-debug, chibios, 10)	6m 26s
build (fmuv3, chibios, 10)	12m 59s
build (revo-mini, chibios, 10)	9m 38s
build (MatekF405-Wing, chibios, 10)	10m 10s
build (CubeOrange-ODID, chibios, 10)	8m 1s
build (CubeRedPrimary-bootloader, chibios, 10)	50s
build (configure-all, chibios, 10)	10m 47s
build (build-options-defaults-test, chibios, 10)	22m 8s
build (signing, chibios, 10)	7m 17s
build (CubeOrange-PPP, chibios, 10)	6m 15s
build (CubeRed-EKF2, chibios, 10)	6m 11s
build (SOHW, chibios, 10)	9m 52s
build (Pixhawk6X-PPPGW, chibios, 10)	1m 42s
build (new-check, chibios, 10)	12m 7s
	2h 45m 52s

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