Add support for selection of Opus in Developer Options

Stub implementation for LC3 is added due to the interfaces being
present. The BT stack does not currently implement LC3 over A2DP.

Bug: 226441860
Test: BluetoothCodecDialogPreferenceControllerTest

Change-Id: I40546c97370872b37c0258d10e67a3871f9d9af5