Allow the autotracking return to preset timeout to be set via MQTT

[jakeycrx]

Hi,

I'd like to be able to set the autotracking return to preset timeout via MQTT. My setup quite often loses track of cats when they become stationary. This means the PTZ returns to the home position when the cat has stopped moving but is still present. It would be useful to be able to temporarily increase the timeout via an automation in certain scenarios.