Turn airplane mode, also known as flight mode, on or off.
Setting(string): "on" indicates that airplane mode should be turned on, otherwise it is turned off.
Succeeded (boolean): Indicates whether the action succeeded.
This is now our home-grown version of airplane mode on Android, since Android have deprecated programming airplane mode by a non-system app. WiFi and BlueTooth can be turned on See Network.SetWiFiMode and Network.SetBlueToothMode for details on turning those features on or off separately.