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/avatar/src/Live2DOverlay.cs

@@ -40,7 +40,7 @@ namespace Mods.Live2DTest
                 return;
             }
 
-            model = Live2DService.CreateModel(container, ModelPath, ModelNodeName, "live2d__avatar");
+            model = Live2DService.CreateModel(container, ModelPath, ModelNodeName, "live2d_base__avatar");
             if (model == null)
             {
                 GameLogger.Log("LIVE2D_TEST", "Live2DOverlay: model creation failed", LogLevel.Error);