- Renamed existing hello world endpoints to public and added a new protected endpoint with OAuth guard.
- Updated test cases to reflect the new endpoint structure and added tests for protected endpoint access with and without valid tokens.
- Enhanced response handling for public and protected endpoints to ensure consistent output and proper status codes.
- Added core functionality for OAuth authorization, token handling, and user info retrieval, including error handling and response generation.
- Introduced helper functions for managing different grant types, improving code organization and clarity.
- Enhanced the test setup with a new Prepare function to initialize the OpenAPI test environment and a Clean function for proper resource management.
- Updated tests to ensure the OpenAPI server is correctly loaded and operational during testing.
