Use Apple Music API to integrate it

There’s a new IOS APP called SOOR (OTC $9.99) which is a replacement for the standard Apple Music APP.

I’m wondering if an approach like he (the Indian developer and UX designer Tanmay Sonawane) used would work in Roon?

FWIW even if it was available it wouldn’t provide all the data and in a format that Roon would require, they won’t compromise on their implementation. Qobuz made changes to allow a full Roon integration, Apple wouldn’t do the same.