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/Engines/Advanced Search/AdvancedSearchCommand.cs

@@ -2,16 +2,14 @@ namespace Server.Engines.AdvancedSearch;
 
 public static class AdvancedSearchCommand
 {
-    public static void Initialize()
+    public static void Configure()
     {
-        CommandSystem.Register("XmlFind", AccessLevel.Player, OnCommand); // For those old school peeps!
-        CommandSystem.Register("AdvancedSearch", AccessLevel.Player, OnCommand);
-        CommandSystem.Register("AdvSrch", AccessLevel.Player, OnCommand);
-        CommandSystem.Register("AS", AccessLevel.Player, OnCommand);
+        CommandSystem.Register("AdvancedSearch", AccessLevel.Administrator, OnCommand); // For those old school peeps!
     }
 
     [Usage("AdvancedSearch")]
     [Description("Opens the advanced search gump.")]
+    [Aliases("AdvSrch", "AS", "XmlFind")]
     private static void OnCommand(CommandEventArgs e)
     {
         var from = e.Mobile;