feat: add event bus

Client/Domain/Events/EventBusInterface.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Events
+{
+    public interface EventBusInterface
+    {
+        void Subscrbe<T>(EventHandlerInterface<T> handler) where T : EventInterface;
+        void Unsubscrbe<T>(EventHandlerInterface<T> handler) where T : EventInterface;
+        void Publish<T>(T @event) where T : EventInterface;
+    }
+}

Client/Domain/Events/EventHandlerInterface.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Events
+{
+    public interface EventHandlerInterface
+    {
+    }
+
+    public interface EventHandlerInterface<T> : EventHandlerInterface where T : EventInterface
+    {
+        void Handle(T @event);
+    }
+}

Client/Domain/Events/EventInterface.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Events
+{
+    public interface EventInterface
+    {
+    }
+}

Client/Domain/Events/HeroCreatedEvent.cs

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+using Client.Domain.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Events
+{
+    public class HeroCreatedEvent : EventInterface
+    {
+        public readonly Hero Hero;
+
+        public HeroCreatedEvent(Hero hero)
+        {
+            Hero = hero;
+        }
+    }
+}

Client/Domain/Events/HeroDeletedEvent.cs

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+using Client.Domain.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Events
+{
+    public class HeroDeletedEvent : EventInterface
+    {
+    }
+}

Client/Domain/Events/NpcCreatedEvent.cs

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+using Client.Domain.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Events
+{
+    public class NpcCreatedEvent : EventInterface
+    {
+        public readonly NPC NPC;
+
+        public NpcCreatedEvent(NPC npc)
+        {
+            NPC = npc;
+        }
+    }
+}

Client/Domain/Events/NpcDeletedEvent.cs

@@ -0,0 +1,19 @@
+using Client.Domain.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Events
+{
+    public class NpcDeletedEvent : EventInterface
+    {
+        public readonly uint Id;
+
+        public NpcDeletedEvent(uint id)
+        {
+            Id = id;
+        }
+    }
+}