Update dependencies and refactor web server functionality

- Updated dependencies in Cargo.toml for improved performance and security.
- Changed description and categories in Cargo.toml for clarity.
- Refactored main.rs to simplify server initialization and remove unnecessary conditionals.
- Renamed web module documentation to reflect web server functionality.
- Updated routes documentation to clarify purpose.
- Simplified static file serving logic in static_files.rs, improving error handling and response structure.

Author: excoffierleonard