External motion sensor, trigger protect detection
<!-- FEATURE REQUESTS THAT ARE NOT FILLED OUT COMPLETELY WILL BE CLOSED AUTOMATICALLY WITHOUT WARNING AND WILL NOT RECEIVE A RESPONSE. THE FORM IS HERE FOR A REASON. :). -->
<!-- Please ensure you read the documentation before creating a feature request to ensure the functionality doesn't already exist. -->

**Is your feature request related to a problem? Please describe:**
<!-- A clear and concise description of what the problem is or what use case you would like to see supported. e.g. I'm always frustrated when [...] -->

**Describe the solution you'd like:**
Potential for a new automation, where having an external (non unifi) motion sensor fire, which would trigger homekit automation and force a unifi protect detection plus "motion recording" event, even if the protect camera itself did not detect motion per se. There are cases of motion, that protect cameras do not actually sense. If I can use other sensors to further support, that would be perfect.

**Describe alternatives you've considered:**
<!-- A clear and concise description of any alternative solutions or features you've considered. -->

**Additional context:**
<!-- Add any other context or screenshots about the feature request here. -->

<!-- Click the "Preview" tab before you submit to ensure the formatting is correct. -->
