feat(blog): add comprehensive guide on building production-ready SSR applications with Analog.js

- Introduced a new blog post detailing the process of building server-side rendered applications using Analog.js, including real-world examples from TechLeadPilot.
- Covered key topics such as project architecture, Firebase integration, server-side data loading, and performance optimization strategies.
- Added a cover image to enhance visual engagement and improve the overall user experience.

Author: dalenguyen