chore: Added Initial Engine Code

Engine.Core/Abstract/IGameObject.cs

@@ -0,0 +1,12 @@
+using System;
+
+using Microsoft.Xna.Framework;
+
+namespace Syntriax.Engine.Core.Abstract;
+
+public interface IGameObject : IEntity, IAssignableTransform, IAssignableBehaviourController, INameable, IInitialize
+{
+    Action<IGameObject, GameTime>? OnUpdated { get; set; }
+
+    void Update(GameTime time);
+}