* Removed the old SpeedTestApiRoutes and RandomData classes to streamline the architecture.
* Introduced SpeedTestController to handle API requests and integrate with the new service layer.
* Added RandomDataGenerator for generating random data, improving separation of concerns.
* Created interfaces for speed test operations, enhancing type safety and maintainability.
* Updated InMemorySpeedTestRepository to manage sessions with improved timeout handling.
* Introduced a new HTML frontend for network speed testing with a responsive UI
* Implemented backend server functionality to serve the frontend and handle speed test APIs
* Added speed test logic for downloading and uploading data, including progress tracking and result validation
* Created README-SPEEDTEST.md for documentation on application architecture, setup, and usage.
* Updated package.json to include necessary scripts and dependencies for development and testing
