Add attribute system with core stats and gameplay components

GameCore/ECS/PresenterData.cs

@@ -0,0 +1,10 @@
+using GameCore.ECS.Interfaces;
+
+namespace GameCore.ECS;
+
+public readonly struct PresenterData(Entity entity, IEntityPresenter presenter, List<IPresenterComponent> components)
+{
+    public readonly Entity Entity = entity;
+    public readonly IEntityPresenter Presenter = presenter;
+    public readonly List<IPresenterComponent> Components = components;
+}