Merge "LE Audio State Machine and Native Interface boilerplate" am: 2b8f7373cf am: e1a71dfb61

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Bluetooth/+/1515503

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Iec6a5957064d8a12c1b129b9d4759ea4caa690b7