Add comprehensive documentation for website setup, hosting, and optimization

- Created detailed guides on GitHub usage, including GitHub Pages setup, custom domain configuration, and GitHub Actions for automated deployments.
- Documented various hosting services tested for the website, including current status and future services to explore.
- Provided instructions for local development and production deployment using Docker and Python.
- Explained the use of MkDocs for static site generation, including theme customization and installed plugins for enhanced functionality.
- Outlined performance optimizations, security features, and build tools used in the project.
- Added motivation and philosophy behind writing and sharing knowledge through the website.
- Generated statistics page with insights on content metrics, file sizes, and recent changes.

Author: f@bi.an