Check location settings before location request

[mmathieum]

Help user get location settings right instead of waiting endlessly for a location update. The Google Maps Android app does this. Flow tested on Chromebook where use often have not used another Android app with location before.

Links:

• https://github.com/android/location-samples/
• https://developer.android.com/training/location/change-location-settings
• https://github.com/android/location-samples/blob/main/LocationUpdates/app/src/main/java/com/google/android/gms/location/sample/locationupdates/MainActivity.java
• https://developers.google.com/android/reference/com/google/android/gms/location/SettingsClient