Changes to existing flutter project, firebase push notifications, google cloud functions

Job ID: 35480512

Budget: $15 – $25 USD

1. Existing button needs to start a custom action: flutter_background_geolocation: ^4.8.3; send updated locations to firestore user collection until ended by button
2. Add 3 android notification channels with custom sound on one of them, user can choose between 10 preloaded sounds in settings of app; iOS critical alerts with same custom sound choices
3. Auto app update checker, upgrader: ^4.11.1
4. google maps page with markers of all user locations, marker icon is to be user profile pictures icons
----only show gps locations on map when user background location is on. else set a boolean gpsTracking to off to hide from map. allow users with accessLevel >= 5 to still see all locations. The app currently updates the gps location on page load, i still need that to work.