Merge "Add README with details about the status of support for this app" into main am: bc0d4e0572 am: 3e712a1fd1

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Contacts/+/3319835

Change-Id: I6c125dedcf5f9086bea3bd8c1eb9ddd015335b95
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>