Split highgui module to videoio and highgui

samples/cpp/tutorial_code/objectDetection/objectDetection.cpp

@@ -1,4 +1,5 @@
 #include "opencv2/objdetect.hpp"
+#include "opencv2/videoio.hpp"
 #include "opencv2/highgui.hpp"
 #include "opencv2/imgproc.hpp"
 

samples/cpp/tutorial_code/objectDetection/objectDetection2.cpp

@@ -4,6 +4,7 @@
  * @brief A simplified version of facedetect.cpp, show how to load a cascade classifier and how to find objects (Face + eyes) in a video stream - Using LBP here
  */
 #include "opencv2/objdetect.hpp"
+#include "opencv2/videoio.hpp"
 #include "opencv2/highgui.hpp"
 #include "opencv2/imgproc.hpp"