It would be really nice to be able to ask ZHA if a device model is supported. I had to write a quirk for one of my devices and it would be nice to know when it is natively supported rather than keep track of the PR and comb through the release notes for a “Bump ZHA to xxx” mention. Possibly implemented as a service call?
Not possible. See my reply to your other post.
NEW HARDWARE FUNCTION
As it states in the pinned post, what is exported by the individual coordinator software or device is not in scope for the feature request category. You need to contact those contributors for help with those.
More about Feature Requests.