loadSettings method
Loads the settings from the SharedPreferences.
It retrieves the value of 'app_origin' from the SharedPreferences and assigns it to the appOrigin variable. If the value is not present, it assigns a default value of 'wss://caesar-transfer-iu.shuttleapp.rs'.
Implementation
Future<void> loadSettings() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
appOrigin = prefs.getString('app_origin') ??
'wss://caesar-transfer-iu.shuttleapp.rs';
}