Hi there,
I am happy to approve a PR to create a new publisher for Homebridge. I unfortunately don't have HB and I had a quick look at the documentation and I couldn't find straightforward examples. If interested, check out the Plugin documentation for Pi.Alert:

https://github.com/jokob-sk/Pi.Alert/tree/main/front/plugins#readme

You can check existing plugins, such as the webhook publisher, and create a similar one for a different API suite.

Hope that's helpful,
J