Move non-CV functionality from core.hpp to separate utility.hpp header

modules/contrib/src/detection_based_tracker.cpp

@@ -1,5 +1,6 @@
 #if defined(__linux__) || defined(LINUX) || defined(__APPLE__) || defined(ANDROID)
 #include "opencv2/contrib/detection_based_tracker.hpp"
+#include "opencv2/core/utility.hpp"
 
 #include <pthread.h>
 

modules/contrib/src/precomp.hpp

@@ -52,6 +52,8 @@
 #include "opencv2/objdetect.hpp"
 #include "opencv2/imgproc.hpp"
 #include "opencv2/imgproc/imgproc_c.h"
+
+#include "opencv2/core/utility.hpp"
 #include "opencv2/core/internal.hpp"
 
 namespace cv