feat: add creatures and drops on the map

Client/Domain/Enums/CreatureTypeEnum.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Client.Domain.Enums
+{
+    public enum CreatureTypeEnum
+    {
+        NPC,
+        Player,
+        Hero
+    }
+}