Implement path selection

PamhagenSysCtrl/Helpers/Pipeline/Pipe.cs

@@ -65,10 +65,9 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
             canvas.Children.Add(_inner2);
         }
 
-        public bool Update(double x, double y) {
+        public void Update() {
             _inner1?.Stroke = Highlight ?? Brushes.DarkGray;
             _inner2?.Stroke = Highlight ?? Brushes.DarkGray;
-            return false;
         }
     }
 }