autoadapt: add signal to set bitrate dynamically for MediaCodec

bin/jni/jni_interface.i

bin/jni/videomanager.i

src/client/ring_signal.cpp

src/dring/videomanager_interface.h

src/media/video/video_input.cpp

src/media/video/video_input.h

src/media/video/video_rtp_session.cpp