I’m in the process of doing this, just a bit differently.
I have motion sensors along side my cameras anyway, so my logic is: “if home unoccupied and motion detected, send a telegram message with an image from the camera attached”
Next step is to throw the image up to AWS Rekonition first, and only alert/send if the image contains a person. Based loosely on this implementation - Object detection with Amazon Rekognition
Looking out for more integration with Protect in the future.
Quick and dirty idea in the meantime. Protect provides a web interface, could you just iFrame it into Lovelace? Never used iFrames so no idea how auth works or anything, but if you wanted to get their nice timelapse feature into HA that feels like maybe the easiest way to do it?
Just a thought.