LatLng()
Default constructor required by Serializable. Latitude and longitude are set to 0.0.
LatLng(latitude: Double, longitude: Double)
Instantiates a new LatLng object with provided latitude and longitude.
latitude - Double: latitude value
longitude - Double: longitude value
LatLng(@NonNull location: Location)
Instantiates a new LatLng object based on data from Location object.
location - Location: a Location object