fix: Adds command help, webpage, and fixes issues with other commands (#1669)

### Summary

- Fixes `[AdvancedSearch` being accessible by players 😱 
- Adds `[GenCommands` to generate the same commands html page on https://muo.gg/commands.
- Fixes `[helpinfo` so all commands properly show up!

> [!WARNING]  
> ### Developer Warning:
> Commands must now be registered in the `Configure` bootup phase.
> If a command is not registered early enough, it may not be available to systems like [helpinfo
> that cache their information.

> [!NOTE]  
> ### Developer Note:
> Various commands related to generating content have been changed to _Developer_ and above access level.

### Screenshots
<img width="673" alt="image" src="https://github.com/modernuo/ModernUO/assets/3953314/b105b5c9-5eb4-4ace-93ff-1bfb31e7132f">

<img width="547" alt="image" src="https://github.com/modernuo/ModernUO/assets/3953314/e97487e8-47a5-4aa7-89cc-9fe3deda584d">

Projects/UOContent/Gumps/AdminGump.cs

@@ -1421,7 +1421,7 @@ namespace Server.Gumps
             };
         }
 
-        public static void Initialize()
+        public static void Configure()
         {
             CommandSystem.Register("Admin", AccessLevel.Administrator, Admin_OnCommand);
         }