Feature request: ADSB Proximity notification

It would be awesome if there some alerting on the GCS based on its own GPS location and the aircraft location to let you know when there was traffic detected in a configurable proximity separately configurable for alt and horizontal distance to the UAS or GCS.

Even a non configurable option to just add a check box to the voice options to warn when traffic is detected within a fixed distance or a couple check boxes for a couple different distances.

A more complicated version of this would possibly be able to predict trajectory of other aircraft and deconflict with missions and stuff but that seems a lot more complicated for not a lot of realistic benefit.

The issue names no files, tests, or entry points to inspect. First clarify whether the goal is fixed or configurable horizontal and altitude proximity alerts, and define the traffic data, notification behavior, and acceptance criteria before implementation.

Written by the indexing model from the issue text.