Devices with changing sensors

[VladimirAkopyan]

Currently app has no support for adding or removal of sensors from a device, but it would be trivial to support this - have a button for hiding inactive sensors, and logic for creating them

For now, we have a placeholder:

catch (ArgumentNullException)
{
     //TODO add a new sensor to the device! 
     Util.Toast.NotifyUserOfError($"Device has a new sensor with typeID {message.SensorTypeID}, however adding sensors is not supported yet.");
}