Can’t say I’ve heard anyone mention it here previously, but a quick search revealed only one other topic from a few years ago with no responses, so there’s probably not much already developed.
Looking at the “generic” section of their integrations list, it certainly should be possible for a developer to integrate with Hubitat, possibly through HTTP requests or MQTT. If the system has a REST API (which some of the integrations in that list would suggest), that could probably work too.
