- Deleted multiple unused SQL query files from the cms-service.
- Refactored email template handling in the cms-service to improve clarity and maintainability.
- Updated environment variable loading in both cms-service and lms-service to use dotenvy for better configuration management.
- Added a new .env.dev file for local development with database and SMTP configurations.
- Set default value for `certificates_enabled` in the shared common models.
