Add API to set trackingPerClass in ObjectTracker node

Author: SzabolcsGergely

include/depthai/pipeline/node/ObjectTracker.hpp

@@ -93,6 +93,11 @@ class ObjectTracker : public NodeCRTP<Node, ObjectTracker, ObjectTrackerProperti
      * @param type Tracker ID assignment policy.
      */
     void setTrackerIdAssignmentPolicy(TrackerIdAssignmentPolicy type);
+
+    /**
+     * Whether tracker should take into consideration class label for tracking.
+     */
+    void setTrackingPerClass(bool trackingPerClass);
 };
 
 }  // namespace node

src/pipeline/node/ObjectTracker.cpp

@@ -32,6 +32,9 @@ void ObjectTracker::setTrackerType(TrackerType type) {
 void ObjectTracker::setTrackerIdAssignmentPolicy(TrackerIdAssignmentPolicy type) {
     properties.trackerIdAssignmentPolicy = type;
 }
+void ObjectTracker::setTrackingPerClass(bool trackingPerClass) {
+    properties.trackingPerClass = trackingPerClass;
+}
 
 }  // namespace node
 }  // namespace dai