aosp aidl bluetooth audio hal implementation am: b03b5c4a06 am: 412aafd1eb am: b9b937cce7

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2624193

Change-Id: I8af1ad6ad9b9ed7da4085bf9c8f733e59c977187
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>