Add Dungeon Room and Object Selection Features

- Introduced new classes for DungeonRoomSelector and DungeonObjectSelector to enhance room and object management within the dungeon editor.
- Implemented UI components for selecting rooms and entrances, allowing users to easily navigate and manage dungeon layouts.
- Added functionality for rendering room graphics and object previews, improving the visual editing experience.
- Updated the DungeonEditor class to integrate the new selectors, streamlining the overall editing workflow.
- Enhanced error handling and validation in room and object management processes to ensure robust functionality.

src/app/editor/editor.cmake

@@ -2,6 +2,9 @@ set(
   YAZE_APP_EDITOR_SRC
   app/editor/editor_manager.cc
   app/editor/dungeon/dungeon_editor.cc
+  app/editor/dungeon/dungeon_room_selector.cc
+  app/editor/dungeon/dungeon_canvas_viewer.cc
+  app/editor/dungeon/dungeon_object_selector.cc
   app/editor/overworld/overworld_editor.cc
   app/editor/sprite/sprite_editor.cc
   app/editor/music/music_editor.cc