Add scheduler GUI

b_asic/scheduler-gui/graphics_component_item.py

@@ -22,10 +22,9 @@ class GraphicsComponentItem(QGraphicsItemGroup):
     """A class to represent an component in a graph."""
     _scale:                 float = 1.0
     """Static, changed from MainWindow."""
-    _op_id:                 str
+    _operation:             GraphComponent
     _height:                float
     _ports:                 Dict[str, Dict[str, Union[float, QPointF]]]     # ['port-id']['latency/pos']
-    _execution_time:        Union[int, None]
     _end_time:              int
     _component_item:        QGraphicsPathItem
     _execution_time_item:   QGraphicsRectItem