Set up location manager

setuplocationmanager

// Initialize location services.
    locationManager = [[CLLocationManager alloc] init];
    [locationManager requestAlwaysAuthorization];
    locationManager.delegate = self;
    
    // Accuracy constants here. These should be tested for battery optimization.
    locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
    locationManager.distanceFilter = kCLDistanceFilterNone;
    
    [locationManager startUpdatingLocation];