Mod naming rule and engine UI in engine mods

Mods are renamed by role (shell2d_base, menu_base, ui_base, live2d_base,
editor_tools, cthangover_story, cthangover_murakami, cthangover_party) and
every reference follows. Engine UI prefabs (dialog, answers, message, game
menu, inventory, map, skills) and their panel entries moved out of the story
mod into the subsystem mods; the card_novel and vn_starter_novel collections
are removed.

test_suites/hot_reload/src/HotReloadTestDriverNode.cs

@@ -189,7 +189,7 @@ namespace Mods.HotReloadTest
 
         private static bool UnloadedAndLoadedBoth(ModSetReloadedEvent e) => UnloadedBoth(e) && LoadedBoth(e);
 
-        private static bool UnloadedBaseMenu(ModSetReloadedEvent e) => e.Unloaded.Contains("base_menu");
+        private static bool UnloadedBaseMenu(ModSetReloadedEvent e) => e.Unloaded.Contains("menu_base");
 
         private static bool IsRejectedForLib(ModSetReloadedEvent e) => !e.Applied && e.Errors.Any(IsLibError);