Add door interaction system with state management and event publishing

GameCore/Events/DoorStateChangedEvent.cs

@@ -0,0 +1,11 @@
+using GameCore.ECS;
+using GameCore.Events.Interfaces;
+using GameCore.Interaction;
+
+namespace GameCore.Events;
+
+public readonly struct DoorStateChangedEvent(Entity doorEntity, DoorComponent.DoorState newState) : IEvent
+{
+    public readonly Entity DoorEntity = doorEntity;
+    public readonly DoorComponent.DoorState NewState = newState;
+}