Feat(CS): Add new shortcut for duplicating instances

apps/opencs/model/prefs/state.cpp

@@ -410,6 +410,7 @@ void CSMPrefs::State::declare()
     declareShortcut("scene-edit-abort", "Abort", QKeySequence(Qt::Key_Escape));
     declareShortcut("scene-focus-toolbar", "Toggle Toolbar Focus", QKeySequence(Qt::Key_T));
     declareShortcut("scene-render-stats", "Debug Rendering Stats", QKeySequence(Qt::Key_F3));
+    declareShortcut("scene-duplicate", "Duplicate Instance", QKeySequence(Qt::ShiftModifier | Qt::Key_C));
 
     declareSubcategory("1st/Free Camera");
     declareShortcut("free-forward", "Forward", QKeySequence(Qt::Key_W));

apps/opencs/model/prefs/values.hpp

@@ -464,6 +464,7 @@ namespace CSMPrefs
             "scene-instance-drop-terrain-separately", "" };
         Settings::SettingValue<std::string> mSceneInstanceDropCollisionSeparately{ mIndex, sName,
             "scene-instance-drop-collision-separately", "" };
+        Settings::SettingValue<std::string> mSceneDuplicate{ mIndex, sName, "scene-duplicate", "Shift+C" };
         Settings::SettingValue<std::string> mSceneLoadCamCell{ mIndex, sName, "scene-load-cam-cell", "Keypad+5" };
         Settings::SettingValue<std::string> mSceneLoadCamEastcell{ mIndex, sName, "scene-load-cam-eastcell",
             "Keypad+6" };