LeAudio: Support for Live recordings

This change adds a mechanism for selecting the proper
audio set configuration based on the recording tracks metadata.
The sink and source contexts are both taken into the account
when the configuraiton is selected.

Bug: 256967923
Bug: 243630511
Bug: 256549386
Bug: 229041682
Test: 'atest --host bluetooth_le_audio_test bluetooth_le_audio_client_test --no-bazel-mode' plus manual testing
Change-Id: I82861bd9e109b392b4c1261e3cca9895e1efe2b6