Changed ItemSpawner to EntitySpawner, used for syncing both item and character spawning

Subsurface/Source/Map/Entity.cs

@@ -11,6 +11,7 @@ namespace Barotrauma
     {
         private static Dictionary<ushort, Entity> dictionary = new Dictionary<ushort, Entity>();
 
+        public static EntitySpawner Spawner = new EntitySpawner();
 
         private ushort id;
 

Subsurface/Source/Map/MapEntity.cs

@@ -269,7 +269,7 @@ namespace Barotrauma
                 item.Update(cam, deltaTime);
             }
 
-            Item.Spawner.Update();
+            Entity.Spawner.Update();
             Item.Remover.Update();
         }