AIDL effect: Initial IEffect interface implementation and vts test am: 4590517a96 am: db4ff5da08

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2221633

Change-Id: I801025e9b5fdd6b00c14b251ba7bed9ad5808326
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>