Add attribute system with core stats and gameplay components

GameCore/Combat/DestructionSystem.cs

@@ -0,0 +1,19 @@
+using GameCore.ECS;
+using GameCore.ECS.Interfaces;
+using GameCore.Events;
+
+namespace GameCore.Combat;
+
+public class DestructionSystem : ISystem
+{
+    public void Update(World world, float deltaTime)
+    {
+        var entitiesWithDeath = world.GetEntitiesWith<DeathComponent>();
+        foreach (var entity in entitiesWithDeath)
+        {
+            world.PublishEvent(new EntityDiedEvent(entity));
+
+            world.DestroyEntity(entity);
+        }
+    }
+}