feat: Introduce card management system for dungeon editor

- Added EditorCardManager to handle registration, visibility, and management of editor cards.
- Integrated card shortcuts and dynamic menu sections for improved user experience in the dungeon editor.
- Registered multiple dungeon-related cards with associated shortcuts for quick access.
- Enhanced DungeonEditorV2 to utilize the new card management system, allowing independent control of editor cards.
- Updated UI components to support card-based editors, improving layout and usability.

src/app/editor/editor_manager.h

@@ -189,6 +189,7 @@ class EditorManager {
   bool show_session_rename_dialog_ = false;
   bool show_welcome_screen_ = false;
   bool welcome_screen_manually_closed_ = false;
+  bool show_card_browser_ = false;
   size_t session_to_rename_ = 0;
   char session_rename_buffer_[256] = {};