Updates Serialization (#292)

- [X] Removes all save strategies
- [X] Removes duplicate file writer that won't be used
- [X] Removes persistence (it will become a duplicate system)
- [X] Add a save position variable to skip serializing a clean item/mobile
- [X] Update Guilds/Accounts to be IEntity types
    - Because guilds are abstract, this may make serialization tricky.
- [X] Update the generalized IEntity writing
- [X] Update the load/save to write to buffers then to files in background


Bumps release version

Projects/UOContent/Items/Food/Beverage.cs

@@ -101,7 +101,7 @@ namespace Server.Items
                         }
                         else
                         {
-                            throw new Exception(World.LoadingType);
+                            throw new Exception("Invalid beverage type");
                         }
 
                         break;
@@ -380,7 +380,7 @@ namespace Server.Items
                         }
                         else
                         {
-                            throw new Exception(World.LoadingType);
+                            throw new Exception("Invalid beverage type");
                         }
 
                         break;
@@ -550,7 +550,7 @@ namespace Server.Items
                         }
                         else
                         {
-                            throw new Exception(World.LoadingType);
+                            throw new Exception("Invalid beverage type");
                         }
 
                         break;
@@ -1106,7 +1106,7 @@ namespace Server.Items
             writer.Write(m_Quantity);
         }
 
-        protected bool CheckType(string name) => World.LoadingType == $"Server.Items.{name}";
+        protected bool CheckType(string name) => GetType().FullName == $"Server.Items.{name}";
 
         public override void Deserialize(IGenericReader reader)
         {