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/Spells/Eighth/Resurrection.cs

@@ -63,7 +63,6 @@ namespace Server.Spells.Eighth
                 m.PlaySound(0x214);
                 m.FixedEffect(0x376A, 10, 16);
 
-                m.CloseGump<ResurrectGump>();
                 m.SendGump(new ResurrectGump(Caster));
             }
         }