Refreshed images and diagrams for calculator, chat, solitaire, and todo Python tutorials. Updated related markdown documentation to improve clarity and visual examples.

Summary by Sourcery

Refresh Python tutorial and cookbook documentation by updating visual assets and image links to local relative paths, and adjust mkdocs configuration to support SVG assets.

Enhancements:

• Refresh visual assets (images and gifs) for calculator, chat, solitaire, todo, and trolli tutorials
• Refactor markdown image references to use local relative asset paths instead of absolute GitHub URLs

Build:

• Extend mkdocs configuration to include SVG files in example asset mappings

Documentation:

• Update cookbook and tutorial markdown for consistent media linking and clearer visual examples