feat: add view models for all entities

Client/Domain/ViewModels/MainViewModelInterface.cs

@@ -0,0 +1,24 @@
+using Client.Application.ViewModels;
+using Client.Domain.Entities;
+using Client.Domain.ValueObjects;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.ViewModels
+{
+    public interface MainViewModelInterface
+    {
+        void AddChatMessage(ChatMessage chatMessage);
+        void CreateHero(Hero hero);
+        void DeleteHero();
+        void AddNpc(NPC npc);
+        void RemoveNpc(NPC npc);
+        void AddPlayer(Player player);
+        void RemovePlayer(Player player);
+        void AddDrop(Drop drop);
+        void RemoveDrop(Drop drop);
+    }
+}