Add scene stack menu flow and restore stable TFT sync refresh

lib/game_launcher.h

@@ -97,6 +97,17 @@ public:
      */
     bool select_game_by_name(const char* name);
 
+    /**
+     * @brief Restart the currently selected game.
+     * @return true if restart succeeded, false otherwise
+     */
+    bool restart_selected_game();
+
+    /**
+     * @brief Exit current game and return to launcher menu.
+     */
+    void return_to_menu();
+
 private:
     uint16_t width;
     uint16_t height;