- Add support for the OAuth Device Authorization Flow (RFC 8628) in the OpenAPI service, allowing devices with limited input capabilities to obtain authorization.
- Implement `DeviceAuthorization()` and `AuthorizeDevice()` methods to handle device and user code generation, storage, and authorization.
- Update the OAuth endpoints to include `/device/authorize` for user code authorization and fix the discovery endpoint path for device authorization.
- Introduce MongoDB service in CI workflows for testing and enhance the unit test workflow with Redis setup.
- Update Go module dependencies to include necessary packages for the new features.
This commit significantly advances the OAuth capabilities of the application, enabling a more flexible authorization process for devices.
