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.

locale/en.properties

@@ -1,2 +1,2 @@
-mod_live2d_name = Live2D Cubism
-mod_live2d_desc = Live2D Cubism C# runtime: model loading, rendering, physics, animation, effects.
+mod_live2d_base_name = Live2D Cubism
+mod_live2d_base_desc = Live2D Cubism C# runtime: model loading, rendering, physics, animation, effects.

locale/ru.properties

@@ -1,2 +1,2 @@
-mod_live2d_name = Live2D Cubism
-mod_live2d_desc = C#-рантайм Live2D Cubism: загрузка и отрисовка моделей, физика, анимации и эффекты.
+mod_live2d_base_name = Live2D Cubism
+mod_live2d_base_desc = C#-рантайм Live2D Cubism: загрузка и отрисовка моделей, физика, анимации и эффекты.