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/Server/Gumps/Legacy/GumpImageTileButton.cs

@@ -1,70 +0,0 @@
-/*************************************************************************
- * ModernUO                                                              *
- * Copyright 2019-2024 - ModernUO Development Team                       *
- * Email: hi@modernuo.com                                                *
- * File: GumpImageTileButton.cs                                          *
- *                                                                       *
- * This program is free software: you can redistribute it and/or modify  *
- * it under the terms of the GNU General Public License as published by  *
- * the Free Software Foundation, either version 3 of the License, or     *
- * (at your option) any later version.                                   *
- *                                                                       *
- * You should have received a copy of the GNU General Public License     *
- * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
- *************************************************************************/
-
-using System.Buffers;
-using Server.Collections;
-
-namespace Server.Gumps;
-
-public class GumpImageTileButton : GumpEntry
-{
-    public GumpImageTileButton(
-        int x, int y, int normalID, int pressedID, int buttonID, GumpButtonType type, int param,
-        int itemID, int hue, int width, int height
-    )
-    {
-        X = x;
-        Y = y;
-        NormalID = normalID;
-        PressedID = pressedID;
-        ButtonID = buttonID;
-        Type = type;
-        Param = param;
-
-        ItemID = itemID;
-        Hue = hue;
-        Width = width;
-        Height = height;
-    }
-
-    public int X { get; set; }
-
-    public int Y { get; set; }
-
-    public int NormalID { get; set; }
-
-    public int PressedID { get; set; }
-
-    public int ButtonID { get; set; }
-
-    public GumpButtonType Type { get; set; }
-
-    public int Param { get; set; }
-
-    public int ItemID { get; set; }
-
-    public int Hue { get; set; }
-
-    public int Width { get; set; }
-
-    public int Height { get; set; }
-
-    public override void AppendTo(ref SpanWriter writer, OrderedSet<string> strings, ref int entries, ref int switches)
-    {
-        writer.WriteAscii(
-            $"{{ buttontileart {X} {Y} {NormalID} {PressedID} {(int)Type} {Param} {ButtonID} {ItemID} {Hue} {Width} {Height} }}"
-        );
-    }
-}