try to register for push notifications

Optional+Require.swift

    func getNotificationSettingsThenRegister() {
        UNUserNotificationCenter.current().getNotificationSettings {
            //This closure definition gets access to push notification settings
            settings in
            
            //Here we check if the user authorized push notifications
            //If the user refused push notification auth, then this will exit early
            guard settings.authorizationStatus == .authorized else {return}
            
            //We pop the registration code onto the main queue as recommended by Apple
            DispatchQueue.main.async {
                
                //Here we attempt to register for remote push notifications
                UIApplication.shared.registerForRemoteNotifications()
            }
        }
    }