Jacob Pan

Initial commit for enabling ground positions. Adds columns to positions table and ground_position message handler in db-updater, and then add ground_positions endpoint on fids_backend and also attempt to add ground...

Prevent duplicate alerts being created by sending a JSON message indicating that another alert is the same (based off of if the ident, dest, origin, and aircraft type are all...

Add endpoint to allow frontend to set PUT request to update alerts on AeroAPI, and add function to update the SQLite table accordingly. Changes begin at [06d71f8](https://github.com/flightaware/aeroapps/pull/15/commits/06d71f8631edb83c59baa365a18095fd2d6244f1) BCK-7009