feat(editor): enhance EditorManager with card-based editor functionality

- Introduced methods to determine if an editor is card-based and to retrieve its category.
- Implemented a sidebar toggle shortcut (Ctrl+B) for managing card visibility.
- Added functionality to hide current editor cards when switching editors.
- Updated editor initialization to register global shortcuts for activating specific editors.
- Enhanced the Update method to draw a sidebar for the current category editor.

Benefits:
- Improved user experience by organizing editor cards and providing quick access to editor categories.
- Streamlined editor management, making it easier to switch between different editing contexts.

src/app/editor/editor.h

@@ -113,6 +113,7 @@ class Editor {
 
   bool* active() { return &active_; }
   void set_active(bool active) { active_ = active; }
+  void toggle_active() { active_ = !active_; }
 
   // ROM loading state helpers (default implementations)
   virtual bool IsRomLoaded() const { return false; }