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/TweenTriangleExtensions.cs

@@ -1,18 +1,31 @@
-using System;
 using Engine.Core;
 
 namespace Engine.Systems.Tween;
 
 public static class TweenTriangleExtensions
 {
-    public static ITween TweenTriangle(this Triangle initialTriangle, ITweenManager tweenManager, float duration, Triangle targetTriangle, Action<Triangle> setMethod)
-       => tweenManager.StartTween(duration,
-            t => setMethod?.Invoke(
+    private static readonly BoxedPool<Triangle> boxedTrianglePool = new(2);
+
+    public static ITween TweenTriangle(this Triangle initialTriangle, ITweenManager tweenManager, float duration, Triangle targetTriangle, System.Action<Triangle> setMethod)
+    {
+        Boxed<Triangle> boxedInitial = boxedTrianglePool.Get(initialTriangle);
+        Boxed<Triangle> boxedTarget = boxedTrianglePool.Get(targetTriangle);
+
+        ITween tween = tweenManager.StartTween(duration, t => setMethod?.Invoke(
                 new Triangle(
-                    initialTriangle.A.Lerp(targetTriangle.A, t),
-                    initialTriangle.B.Lerp(targetTriangle.B, t),
-                    initialTriangle.C.Lerp(targetTriangle.C, t)
+                    boxedInitial.Value.A.Lerp(boxedTarget.Value.A, t),
+                    boxedInitial.Value.B.Lerp(boxedTarget.Value.B, t),
+                    boxedInitial.Value.C.Lerp(boxedTarget.Value.C, t)
                 )
             )
         );
+
+        tween.OnComplete(() =>
+        {
+            boxedTrianglePool.Return(boxedInitial);
+            boxedTrianglePool.Return(boxedTarget);
+        });
+
+        return tween;
+    }
 }