LeAudio/CodecExtensibility: Use the AIDL configuration provider API

Bug: 308428644
Bug: 313054645
Test: atest bluetooth-test-audio-hal-le-audio-software bluetooth-test-audio-hal-aidl-leaudio-utils bluetooth_le_audio_test bluetooth_le_audio_client_test bluetooth_test_broadcaster bluetooth_test_broadcaster_state_machine bluetooth_le_audio_codec_manager_test
Merged-In: I36820b297bad042b8927e10158056746b07cfeaa
Change-Id: I36820b297bad042b8927e10158056746b07cfeaa