Publish MQTT message on motion
**Describe the bug**
I don't know if this is a bug or not implemented, how to setup camera.ui to publish a MQTT message when camera.ui detect motion?

**To Reproduce**
Setup MQTT on camera.ui, setup Camera Alarm MQTT topic and messages.

**Expected behavior**
Updated MQTT topic when detected motion by Camera.UI

**Logs**

**Screenshots**

**Environment**
OS: Debian 10 with docker Alpine Linux (3.12.9)
Homebridge: v4.42.0
Node JS: v16.13.2
Npm: v8.1.2




