feat: Implement queue monitoring system with alert configuration
- Added QueueHelper class for managing and displaying queue pages.
- Created modular architecture for the Telegram bot, breaking down into 17 separate modules.
- Developed queue monitoring system with real-time alerts for low and empty queue states.
- Introduced configuration options for queue monitoring in .env file.
- Implemented alert state persistence using JSON file.
- Added status command for users to check queue health and alert configurations.
- Created migration script for switching between monolithic and modular bot versions.
- Updated documentation for bot architecture, queue monitoring configuration, and implementation details.