[fix] fix missing name for articulated object

source/RobotAPI/libraries/armem_objects/client/articulated_object/ArticulatedObjectWriter.cpp

@@ -28,7 +28,7 @@ namespace armarx::armem::articulated_object
                 {"PriorKnowledgeData"}, obj.getFilename()),
                 obj.getFilename())
             },
-            .instance    = "", // TODO(fabian.reister):
+            .instance    = obj.getName(),
             .config      = {
                 .timestamp  = timestamp,
                 .globalPose = Eigen::Affine3f(obj.getRootNode()->getGlobalPose()),