UI - Replaced tuples with custom classes for binding

As far as i know, it's not possible to have CompiledBindings with tuples, since tuple values are fields and not properties. This change allows for compiled bindings, and makes the intent behind the tuples clearer

src/Artemis.UI/Screens/VisualScripting/Pins/InputPinView.axaml.cs

@@ -10,7 +10,7 @@ public partial class InputPinView : PinView
     public InputPinView()
     {
         InitializeComponent();
-        InitializePin(this.Get<Border>("PinPoint"));
+        InitializePin(PinPoint);
     }
 
 

src/Artemis.UI/Screens/VisualScripting/Pins/OutputPinView.axaml.cs

@@ -10,7 +10,7 @@ public partial class OutputPinView : PinView
     public OutputPinView()
     {
         InitializeComponent();
-        InitializePin(this.Get<Border>("PinPoint"));
+        InitializePin(PinPoint);
     }