MQTT message on camera error
The Problem:
Many professional camera systems have a feature that sends out some kind of alarm if the video feed of one or more cameras is lost.
Sadly i couldnt find a way to activate something like this feature in camera UI. 
I have a camera that randomly drops out of the wifi, needing to be restartet. That would be easily doable with a relay that is triggered by an MQTT error message send by camera UI.


The Request:
Is it possible to add a feature that sends an MQTT error message as soon as camera UI starts to display the "CAMERA OFFLINE" screen? 

This would enable the automatic detection of camera problems and may even be usefull to detect cut wires like in professional installations. 

I imagine that this shouldnt be too hard to implement as the Offline screen is already triggered by a missing video feed and MQTT is also already involved for motion detection.


I hope this is as easily possible as I think and that it can be implementet in the next version.
