[CoreGraph]  separated graph node,s group from root NodeGroup  to new added graphGropu as it's children, and make graphGroup children of root. This will be better for manipulation with background(skybox, etc) and it give option to add tranformation only for graph in future.
[CoreGraph] Add graphRotTransf MatrixTransform node between root and graphGroup for rotating graph. Add also inherition of GraphCore class from QObject to enable to add updateArucoGraphRotation slot and update CMakeList also for it. Slot give QMatrix4x4 and transform it to osg::Matrixd and than set graphRotTransf. So this slot can be uset for rotating graph from ArucoThread.