fix: Adds static warning/notice gumps. (#1741)

### Summary
* Adds `StaticNoticeGump<T>` and `StaticWarningGump<T>`
* Converts NoticeGump/WarningGump to use `DynamicGump`
* Changes various uses of notice gump and warning gump to their static counterpart.

Projects/UOContent/Commands/Handlers.cs

@@ -251,13 +251,8 @@ namespace Server.Commands
                 );
 
                 from.SendGump(
-                    new WarningGump(
-                        1060635,
-                        30720,
-                        $"You are about to delete {list.Count} object{(list.Count == 1 ? "" : "s")} from this facet.  Do you really wish to continue?",
-                        0xFFC000,
-                        360,
-                        260,
+                    new DeleteObjectsNoticeGump(
+                        list.Count,
                         okay => DeleteList_Callback(from, okay, list)
                     )
                 );
@@ -268,6 +263,17 @@ namespace Server.Commands
             }
         }
 
+        private class DeleteObjectsNoticeGump : StaticWarningGump<DeleteObjectsNoticeGump>
+        {
+            public override int Header => 1060635; // <CENTER>WARNING</CENTER>
+            public override int Width => 360;
+            public override int Height => 260;
+            public override string Content { get; }
+
+            public DeleteObjectsNoticeGump(int count, Action<bool> callback) : base(callback) =>
+                Content = $"You are about to delete {count} object{(count == 1 ? "" : "s")} from this facet.  Do you really wish to continue?";
+        }
+
         [Usage("GetFollowers")]
         [Description("Teleports all pets of a targeted player to your location.")]
         public static void GetFollowers_OnCommand(CommandEventArgs e)