Camera2: Correct error handling

- Report capture failures from service to application
- Only go to error state for device-level errors
- Adjust binder interface method names to match the service side names
- Reduce failed session creation logging
- Don't fire CaptureSession.onActive for CameraDevice.onBusy
- Check with session to determine capture failure reason

Bug: 17160301
Bug: 15524101
Bug: 14448494
Bug: 11272459

Change-Id: I9dd606004fd7845910dc865738fbe17f1640f07d