Add Support for default response.

[dhruvCW]

add support for default as a response code as specified in https://swagger.io/docs/specification/2-0/describing-responses/ Default Response section.

thus allowing for specifying a model that corresponds to all http status codes that are not specifically mentioned.

[dhruvCW]

Hello maintainers 👋

(I think @LeFnord ) could you help re-run the specs ? they do execute successfully locally but I have no idea what's happening with the CI

[dhruvCW]

@LeFnord I disabled the fail fast setting and it seems that most of the matrix passes except the head version which fails because of Your Ruby version is 3.2.0.dev, but your Gemfile specified 3.2.0

I have no idea if this is something that can be fixed quickly perhaps we can remove the head version from the matrix for now and create an issue with the github action ? so as to enable the CI and merge the PRs that are open.

[dhruvCW]

hello maintainers (@LeFnord)👋

could this be reviewed please ? is it worth merging ?

[LeFnord]

first thanks @dhruvCW …

please can you add a CHANGELOG entry and a Routes Configuration entry in the README, thanks

[LeFnord]

and yeah … your PR is very welcome :)

[dhruvCW]

please can you add a CHANGELOG entry and a Routes Configuration entry in the README, thanks

added documentation to the README and CHANGELOG entry.

[LeFnord]

thanks @dhruvCW