Add more configurations support for PTS CAP test

For CAP test cases, add some configuration to make the stack more flexible for the audio configuration
1. source only remote device for ringtone
2. source only remote device for media
3. sink only remote device for conversational

Bug: 240145498
Bug: 240145073
Test: PTS CAP/INI/UST/BV-04, 05, 08
Change-Id: Ibcea4ddfc76aa7c89d959991eeb84f9abf993785