did MQTT change in latest update?
Hey @SeydX, thanks again for the plugin, here again trying to solve something (or maybe help others to solve) :)

**Describe the bug**
Motion sensors are activated but instantly disappear in Home app, they don't stay activated while there's movement, like they did before update.

**To Reproduce**
- updated plugin and kept the parameters: didn't work, motion sensor disappear after 1 sec (default parameter)
- tried with "motionTimeout" to 0, 1 or any number of seconds: motion sensor appears, stays for the seconds previously added, then disappear.
- tried to change the MQTT config parameters as said in [Wiki](https://sunoo.github.io/homebridge-camera-ffmpeg/automation/mqtt.html): same result (BTW they're different than Camera-UI plugin)

My guess:
- Seems camera cannot reset sensor, maybe related to [this ](https://github.com/Sunoo/homebridge-camera-ffmpeg/issues/877) and/or [this](https://github.com/Sunoo/homebridge-camera-ffmpeg/issues/1023)

- Seems also if "motionTimeout" is set to any number, plugin resets the sensor but if camera still detecting movement, it won't send a new ON message until it send its own OFF

**Expected behavior**
Motion sensor to be activated, stay on while there's movement, and be off when there's none

**Logs**
I can see ON and OFF messages in log
Also checked with a MQTTAnalizer for iOS and all messages are there
so it looks like plugin or homebridge cannot handle them well and reset the motion sensor

**Environment**
- Node.js Version: v14.16.0
- Homebridge Version: v1.3.4
- Camera UI Version: v3.2.3
- Operating System: rpi homebridge image
