Merge changes Iaab0a019,Ifb94fae4,Id8df92b3,I29abee42,I5e195cbc, ... into main

* changes:
  a2dp: Expose all supported codecs through BluetoothA2dp#getSupportedCodecTypes
  Implement initiator role for codec extensibility
  Update the HCI vendor command A2dp HW Offload
  Implement A2dpCodecConfigExt to extend A2dpCodecs with unknown offloaded codecs
  Add mock implementation of audio_hal_interface library
  audio_hal_interface: Add ProviderInfo class
  Create ranges of reserved codec indexes for codec extensibility