Merge "Move libbluetooth_audio_session out of v2.0 folder" am: f83049be6b

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1570284

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie651716169cb9fea0b4ef06863ffac5aaaa781f3