ADSB Ping heartbeat is not consumed so misconfiguration cannot be detected

We do not consume any heartbeats from the uAvionix ADSB Ping sensor which means that we cannot detect a misconfiguration (i.e. incorrect baud rate). As it is, a misconfiguration will just appear as if there are no planes nearby.

We should consume the heartbeat and then if we are not receiving a heartbeat but the user has set the ADSB_ENABLE parameter to 1 we should report an sensor health in the SYS_STATUS message and trigger a pre-arm check.

Start by locating the uAvionix ADSB Ping sensor integration and the handling for ADSB_ENABLE, then trace how SYS_STATUS and pre-arm checks report sensor health. Done means consuming the sensor heartbeat, detecting its absence when ADSB_ENABLE is 1, reporting the sensor health in SYS_STATUS, and triggering a pre-arm check.

Written by the indexing model from the issue text.