Use hardware channel activity detection for checking interference #117

Job	Run time
build (RAK_4631_repeater)	2m 21s
build (RAK_4631_room_server)	2m 3s
build (wio-e5-mini_repeater)	1m 47s
build (RAK_4631_companion_radio_ble)	2m 17s
build (Heltec_v3_repeater)	2m 43s
build (PicoW_repeater)	2m 35s
build (Heltec_v3_room_server)	2m 42s
build (Heltec_v3_companion_radio_ble)	2m 33s
build (LilyGo_Tlora_C6_repeater_)	1m 36s
	20m 37s

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