VERIFY: Backfill Stationary point captures if needed

[penrods]

The BackgroundGeolocation library has the ability to only report changes in location when the user moves. This saves power in some cases, e.g. if the phone is sitting on a charger and not moving, the accelerometer shows it is stationary. The library saves power by returning a Stationary point.

Verify the behavior around this. I suspect it only generates a callback once, then stops calling until the phone moves again. If this happens, upon the move we should backfill so that we have the same point reported at 5 minute intervals until that next point report.

Example:

@3:01 - I set my phone down on the desk
@3:02 - The BackgroundGeolocation callback triggers and we save a coordinate
@3:40 - I move my phone
@3:40 - The BackgroundGeolocation callback triggers and we save a coordinate

If the above does occur (which we need to verify), we should save the same reported coordinate from 3:02 at 3:07, 3:12, 3:17, 3:22, 3:27, 3:32, 3:37 and then save the new 3:40 coordinate.