Use hardware channel activity detection for checking interference #51

Job	Run time
build (Heltec_v3_companion_radio_ble)	2m 45s
build (LilyGo_Tlora_C6_repeater_)	1m 47s
build (RAK_4631_repeater)	2m 4s
build (Heltec_v3_repeater)	2m 34s
build (RAK_4631_room_server)	2m 12s
build (wio-e5-mini_repeater)	1m 54s
build (RAK_4631_companion_radio_ble)	1m 57s
build (PicoW_repeater)	2m 20s
build (Heltec_v3_room_server)	2m 37s
	20m 10s

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