Add blog post: MongoDB Change Streams and Real-Time Event Processing for Reactive Microservices

- Comprehensive tutorial on MongoDB Change Streams for real-time applications
- Advanced change detection, event sourcing, and reactive architecture patterns
- SQL-familiar change stream operations with QueryLeaf integration
- Real-time event processing workflows for modern microservices
- Performance optimization and best practices for enterprise scale
- Cross-collection monitoring and business intelligence use cases

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: rathboma