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.

collections/frontend.json

@@ -17,7 +17,7 @@
       "locale": [
         { "lang": "ru", "name": "Главное меню", "description": "Главное меню, настройки и панели сохранения/загрузки." }
       ],
-      "mods": ["base_menu>=1", "interface>=1", "audio_base>=1"]
+      "mods": ["menu_base>=1", "ui_base>=1", "audio_base>=1"]
     },
     {
       "id": "mods",