add method draw()

src/main/java/state/shape.java

 package state;
 
+import javafx.scene.canvas.GraphicsContext;
+
 import java.awt.geom.Point2D;
 import java.util.List;
 
@@ -15,5 +17,9 @@ public abstract class shape implements shape{
         }
         return index;
     }
+    public void  draw(GraphicsContext context){
+        for(Shape shape : shapes)
+            shape.draw(context);
+    }
 
 }