Add README with details about the status of support for this app am: 31807335a1 am: e219aff1d6

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Car/Cluster/+/3320575

Change-Id: Ib63e1c9c4ba0acc95999a7b017920ae5fcc2f49a
Signed-off-by: Automerger Merge Worker <[email protected]>
tree: 859cdaee9eac8df35b346ccd402f643ac77abbd5
  1. ClusterHomeSample/
  2. ClusterOsDouble/
  3. DirectRenderingCluster/
  4. README