Validate advert payload length before parsing #178

Job	Run time
build (PicoW_repeater)	2m 35s
build (RAK_4631_repeater)	2m 10s
build (RAK_4631_companion_radio_ble)	2m 11s
build (LilyGo_Tlora_C6_repeater_)	1m 58s
build (Heltec_v3_repeater)	2m 53s
build (Heltec_v3_companion_radio_ble)	2m 49s
build (wio-e5-mini_repeater)	3m 4s
build (RAK_4631_room_server)	2m 9s
build (Heltec_v3_room_server)	2m 50s
	22m 39s

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