perf: improved garbage created by tweens slightly

They still do generate a lot of garbage but with boxed value pools I made the boxes reusable, it still does generate garbage through the delegate creation, gotta find a solution for them later

Engine.Systems/Tween/EngineExtensions/TweenLine2DExtensions.cs

@@ -4,13 +4,28 @@ namespace Engine.Systems.Tween;
 
 public static class TweenLine2DExtensions
 {
+    private static readonly BoxedPool<Line2D> boxedLine2DPool = new(2);
+
     public static ITween TweenLine2D(this Line2D initialLine2D, ITweenManager tweenManager, float duration, Line2D targetLine2D, System.Action<Line2D> setMethod)
-        => tweenManager.StartTween(duration,
+    {
+        Boxed<Line2D> boxedInitial = boxedLine2DPool.Get(initialLine2D);
+        Boxed<Line2D> boxedTarget = boxedLine2DPool.Get(targetLine2D);
+
+        ITween tween = tweenManager.StartTween(duration,
             t => setMethod?.Invoke(
                 new Line2D(
-                    initialLine2D.From.Lerp(targetLine2D.From, t),
-                    initialLine2D.To.Lerp(targetLine2D.To, t)
+                    boxedInitial.Value.From.Lerp(boxedTarget.Value.From, t),
+                    boxedInitial.Value.To.Lerp(boxedTarget.Value.To, t)
                 )
             )
         );
+
+        tween.OnComplete(() =>
+        {
+            boxedLine2DPool.Return(boxedInitial);
+            boxedLine2DPool.Return(boxedTarget);
+        });
+
+        return tween;
+    }
 }