- Added TextureAtlas class to manage multiple textures packed into a single large texture, improving rendering performance and reducing GPU state changes.
- Implemented methods for allocating regions, packing bitmaps, and drawing regions from the atlas.
- Removed the DrawDungeonTabView function from DungeonCanvasViewer as it is no longer needed with the new EditorCard system.
- Updated CMake configuration to include texture_atlas.cc in the build process.
- Refactored Room class to eliminate dependency on Arena graphics sheets, transitioning to per-room graphics for rendering.
