[OpnecCVCore, FaceDetectionWindow] add connection connection for sending results from aruco, add connection for face detection. Update FaceDetection thread for disabling sending image. Fix problem with release camera in faceDetection after finish thread. Both thread can be started and stoped now and they work. But they cannot run in same time, because of camera-problem will be solved with camera singleton.      TODO: fix proble with exiting thread, when windows is closing, and fix problem that more than one Face detection window can be open.