Controls a eufy robovac via MQTT
Uses https://github.com/mitchellrj/eufy_robovac library to connect to the robovac. There is an excellent description on how to get the localKey and devId at https://github.com/apexad/eufy-robovac. Just make sure you use the correct version of the Eufy app.
WIP: Beta. Works fine with my 30C except for set_fan_speed, which does nothing.