Moves various image files demonstrating libomath’s usage and featuring artwork from showcases to the improved `docs/images` structure to reorganize the project's documentation in a logical and maintainable fashion.
This change ensures consistency and simplifies updating documentation assets.
Applies a dark theme to the documentation site using the `darkly` theme.
Provides a visually appealing dark mode option.
Configures colors to ensure readability and aesthetic consistency.
