fix: Overhauls champion titles & codegen champion system (#1430)

## MAJOR CHANGE

Added a champion title system to facilitate the existing champion titles. This should make it easier to extend or create other related game content. Champion titles will be saved in a folder called _ChampionTitles_.

### Motivation

The motivation to refactor was two-folder, but mostly related to performance in two ways.
First, every player had a ChampionTitleInfo object with an array of ChamptionTitleInfo. We want to eliminate the need for this information unless a player actually uses it. This should save a considerable amount of memory.

Second, to facilitate the atrophy mechanic, the champion titles would run atrophy post-world save, adding to the time that the server is frozen. Eliminating this post-world save side effect unlocks our ability to further optimize the world save process since there are no direct side effects.


### Bugs fixed

- [X] Fixed titles getting cut off on the paperdoll
- [X] Fixed champion title not displaying overhead (OPL)

### Screenshots
<img width="216" alt="image" src="https://github.com/modernuo/ModernUO/assets/3953314/8916f895-8d68-4fb0-892e-108a0c43be90">

Projects/Server/Serialization/ISerializable.cs

@@ -34,12 +34,6 @@ public interface ISerializable
     void Deserialize(IGenericReader reader);
     void Serialize(IGenericWriter writer);
 
-    // Determines if AfterSerialize should execute. This is checked on a worker thread.
-    bool ShouldExecuteAfterSerialize { get; }
-
-    // Executes after serialization if ShouldExecuteAfterSerialize is true. This is run on the game thread synchronously.
-    void AfterSerialize();
-
     bool Deleted { get; }
     void Delete();
 
@@ -60,13 +54,6 @@ public interface ISerializable
     {
         SaveBuffer ??= new BufferWriter(true, types);
 
-        // Queue for post serialization if this entity has it enabled
-        // This will run AfterSerialize in the main game thread after the world is done saving
-        if (ShouldExecuteAfterSerialize)
-        {
-            World.EnqueueAfterSerialization(this);
-        }
-
         // Clean, don't bother serializing
         if (SavePosition > -1)
         {