CallControl & CallEventCallback should use CallEndpoint routing

CallControl
- add requestCallEndpointChange API call

CallEventCallback
- remove onCallAudioStateChanged
- add onCallEndpointChanged
- add onAvailableCallEndpointsChanged
- add onMuteStateChanged

bug: 262912490
Test: cts
Change-Id: Ia6231ee02d8b09c3e0384abf45072023a0a76a48
6 files changed