refactor: Remove manual object renderer and dungeon renderer from the editor

- Deleted the ManualObjectRenderer and DungeonRenderer classes to streamline the codebase and reduce redundancy.
- Updated DungeonCanvasViewer and DungeonEditorV2 to remove references to the deleted renderers, ensuring proper functionality without them.
- Enhanced the rendering logic in DungeonCanvasViewer to directly handle object rendering and background layers, improving performance and maintainability.
- Added debug logging to track rendering processes and ensure proper graphics loading.

src/app/editor/editor_library.cmake

@@ -14,7 +14,6 @@ set(
   app/editor/dungeon/dungeon_object_selector.cc
   app/editor/dungeon/dungeon_toolset.cc
   app/editor/dungeon/dungeon_object_interaction.cc
-  app/editor/dungeon/dungeon_renderer.cc
   app/editor/dungeon/dungeon_room_loader.cc
   app/editor/dungeon/dungeon_usage_tracker.cc
   app/editor/dungeon/object_editor_card.cc
@@ -43,7 +42,6 @@ set(
   app/editor/system/popup_manager.cc
   app/editor/system/proposal_drawer.cc
   app/editor/agent/agent_chat_history_codec.cc
-  app/editor/dungeon/manual_object_renderer.cc
 )
 
 if(YAZE_WITH_GRPC)