LeAudio: Codec Config AIDL to stack format helpers

This adds the translation layer between the AIDL types and the
BT stack types.

This will be used by the stack in the upcoming patches.

Bug: 340400084
Test: atest --host bluetooth-test-audio-hal-aidl-leaudio-utils bluetooth-test-audio-hal-le-audio-software bluetooth_le_audio_test bluetooth_le_audio_client_test bluetooth_test_broadcaster bluetooth_test_broadcaster_state_machine bluetooth_le_audio_codec_manager_test
Flag: EXEMPT; This layer is for the codec-extensibility which is not yet used
Change-Id: I372dc45fd183a4044297dfb8b3ec5dc7897bc636