[LeAudio] Add LocalBluetoothLeAudioContentMetadata and LocalBluetoothLeBroadcastMetadata

Test: manual
Bug: 222676140
Change-Id: I3722ce537cc6e2b8a85d6390a432881e7fccef87
Merged-In: I3722ce537cc6e2b8a85d6390a432881e7fccef87
3 files changed