LeAudio: Extend GAME configurations

This extends the GAME configurations to support voiceback channel
and a wide range of device configurations (single earbud, TWS style,
banded headphones).

Tag: #feature
Bug: 269394021
Test: atest --host bluetooth_le_audio_client_test bluetooth_le_audio_test --no-bazel-mode
Change-Id: I6d8938465c78e11f28e088f68e48d625c5501909