Add a framework to embrace the REPR pattern

[Kaliumhexacyanoferrat]

As a developer of an API, I would like to use the REPR pattern with GenHTTP, so that I can quickly create endpoints to handle my requests without the need of boilerplate code but with enough structure to separate the endpoints from each other.

Additional reads: vertical slicing, CQRS

Example

We could easily add endpoints as a concept and let the MethodHandler handle them. As devs may would like to configure their endpoints directly in a single class, we need to check how to implement this with the handler chain and builder pattern that we have in place.

public class MyEndpoint : IEndpoint<MyRequest, MyResponse> 
{

  public MyEndpoint()
  {
    Compression();
    // clarify how to implement this or a similar approach
  }

  public MyResponse Handle(MyRequest request)
  {
    // do stuff
  ]

}

Acceptance criteria

• The functionality is implemented in a new module
• The functionality re-uses the MethodHandler if applicable
• Clarify how to work with path and query parameters
• Clarify how to add concerns re-using the existing modules and functionality (composition over structure/hierarchy)
• There is a project template for this kind of project
• The documentation is updated for this kind of project
• The readme of the GenHTTP server is updated to include this kind of project