init method
Listens for incoming confirmations from the rover that it received the command.
Implementation
Future<void> init() async {
await Future<void>.delayed(const Duration(seconds: 1));
_subscription = models.messages.stream.onMessage(
name: AutonomyCommand().messageName,
constructor: AutonomyCommand.fromBuffer,
callback: (data) => _handshake = data,
);
}