Merge "Add README with details about the status of support for this app" into main am: 445cbc981b am: 424a2cea12

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Music/+/3320613

Change-Id: I5bbd1ce75ed45ace2f4e440ef5f9226ef26909b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>