Behavior Tree for a Pick-and-Place Task (0-10 points)

Grading:
- implementation of the py_trees.behaviour.Behaviour classes called: 
  - MoveTo, 
  - PickObject, 
  - PlaceObject 
  with use of the SceneState class or similar in them to simulate
  real actions that takes a few seconds (current position of the robot 
  and item(s) positions have to be kept outside of the nodes) (3)
- correct definition of the Behavior Tree with the behavior nodes 
  in the proper sequence (3)
- visualization of the ticking BT by the example from the documentation 
  and of the scene with the robot and items' positions updating in real-time with e.g. matplotlib (4)