Enhance EditorManager and TestManager with improved ROM handling and testing features

- Added logging to track ROM changes in EditorManager, ensuring TestManager is updated with the current ROM.
- Implemented real-time ROM status checks in TestManager for better debugging and user feedback.
- Introduced a dialog for creating and managing test ROM sessions, allowing users to open modified ROMs easily.
- Enhanced the testing framework with methods for creating test ROM copies and generating filenames with timestamps.
- Improved the overall user interface of the TestManager, including a more informative dashboard and session management options.

src/app/gui/input.cc

@@ -405,6 +405,8 @@ void DrawMenu(Menu& menu) {
               if (ImGui::MenuItem(each_subitem.name.c_str(),
                                   each_subitem.shortcut.c_str())) {
                 if (each_subitem.callback) each_subitem.callback();
+              } else if (each_subitem.name == kSeparator) {
+                ImGui::Separator();
               }
             }
             ImGui::EndMenu();
@@ -416,6 +418,8 @@ void DrawMenu(Menu& menu) {
                               each_item.shortcut.c_str(),
                               each_item.enabled_condition())) {
             if (each_item.callback) each_item.callback();
+          } else if (each_item.name == kSeparator) {
+            ImGui::Separator();
           }
         }
       }