Merge "Add README with details about the status of support for this app" into main am: 4cbb74bbc0 am: 58cbc9f126

Original change: https://android-review.googlesource.com/c/platform/packages/apps/BasicSmsReceiver/+/3319376

Change-Id: I63d77b516370d81da28590406e80549e9ef8f418
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>