Merge "Add vendor extension effect example" am: 9e741d67b5 am: 449402300f

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2470400

Change-Id: I31ca425e7f283d0ff82dab83d09daf1ce655902b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>