fix: Streamlines gump compilation (#969)

Changes gump compilation to use string interpolation. .NET 6 uses code generation and compile time tricks to speed up string interpolation between 15 and 30% and reduce allocations dramatically.

Projects/UOContent/Gumps/BaseImageTileButtonsGump.cs

@@ -109,9 +109,9 @@ namespace Server.Gumps
                     b.ItemID,
                     b.Hue,
                     15,
-                    10,
-                    b.LocalizedTooltip
+                    10
                 );
+                AddTooltip(b.LocalizedTooltip);
                 TextDefinition.AddHtmlText(this, innerX + 84, innerY, 250, 60, b.Label, false, false, 0x7FFF, 0xFFFFFF);
             }
         }