[REQ] Break out API endpoints into separate definitions file / functions

Is your feature request related to a problem? Please describe.

The main reason I love openapi-generator is that it lets me use a single source of truth for all uses related to my API - the schema file. However, one existing limitation that requires duplication of information is mocking API endpoints. When I need to specify an API endpoint for the purpose of mocking, there is currently no way of extracting said endpoint. It's buried inside a function definition inside the API definition.

Describe the solution you'd like

I'd like a set of functions within the generated XXXApi classes that provide access to the endpoints used in the corresponding functions. For example, I have a generated API called LearnApi with a function called learnCoursesList. I would like a function called learnCoursesListEndpoint or learnCoursesListRequest which gives me access to the endpoint or the request that will be sent to the server. Some endpoints will obviously require request parameters to be passed in.

Describe alternatives you've considered

I'm currently manually specifying API endpoints in my unit tests using (msw)[https://mswjs.io/docs/getting-started/mocks/rest-api], which results in duplication of information.

Additional context

Start by tracing how generated XXXApi classes implement functions such as learnCoursesList and where their endpoint details are assembled. Define how corresponding endpoint or request functions should accept parameters, then verify that generated APIs expose the request information needed for mocking without duplicating endpoint definitions.