[REQ] [rust-server] Log ApiError instead of discarding it

Created by: N-Schaef

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

As far as I understood swagger::ApiError from its description, it should be returned for non-user interfacing errors. When it is returned from the API, an internal server error is displayed to the user automatically, which I think works as intended.

But I also expected the error to be logged for the developer/administrator to investigate the problem.

Describe the solution you'd like

I think it would be good to log the error. In my local fork, I've changed

https://github.com/OpenAPITools/openapi-generator/blob/eceac6a63c3b03715f922d7c65e08a0aee2c8e0e/modules/openapi-generator/src/main/resources/rust-server/server-operation.mustache#L602-L605

Err(e) => {
  // Application code returned an error. This should not happen, as the implementation should
  // return a valid response.
  error!("{}",e);
  *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;

and of course added a import for log::error.

Is this in line with the expectations of the maintainers, and should I open a PR with the changes?

Or is it working as intended and ApiError should be discarded? Then I'd explain that somewhere or document this behavior.