- Introduced `ApiClient` class for handling API interactions, including authentication and resource management.
- Added `CDNManager` class for managing file uploads and downloads to/from a CDN.
- Implemented security features for encryption and decryption of sensitive data.
- Created supporting classes for credentials, user roles, and hardware information retrieval.
- Established constants for configuration and logging.
This commit lays the foundation for resource management and secure communication with the API and CDN services.