feat: Moves gumps out of the core (#1916)

> [!Important]
> **Developer Note**
> This code change will **completely move gumps out of the core**


### Summary

- Adds `GetGumps()` convenience which exposes methods to Find/Close/Send multiple gumps. This helper is a performance improvement by eliminating the Dictionary<Player, List> lookup for gumps.

Projects/UOContent/Skills/Tracking/Tracking.cs

@@ -39,9 +39,11 @@ namespace Server.SkillHandlers
             {
                 m.SendLocalizedMessage(1011350); // What do you wish to track?
 
-                m.CloseGump<TrackWhatGump>();
-                m.CloseGump<TrackWhoGump>();
-                m.SendGump(new TrackWhatGump(pm));
+                var gumps = pm.GetGumps();
+
+                gumps.Close<TrackWhoGump>();
+                gumps.Close<TrackWhatGump>();
+                gumps.Send(new TrackWhatGump(pm));
             }
 
             return TimeSpan.FromSeconds(10.0); // 10 second delay before being able to re-use a skill