Fix segmentation fault on yolo3Detection object copy

This commit fixes a segmentation fault appeared in yolo3 network
updating. Now in Camera_t structure type there is a network pointer.

Signed-off-by: Davide Sapienza <sapienza.dav@gmail.com>

include/cameraUtils.h

@@ -16,7 +16,7 @@ struct Camera_t
     char *cameraCalib;
     char *maskFileOrient;
     bool to_show;
-    tk::dnn::Yolo3Detection yolo;
+    tk::dnn::Yolo3Detection *yolo;
     double adfGeoTransform[6];
 };