Changes to Create a contributor

api tag Contributors added

api tag Contributor removed

added the media type application/xml for the response with the status 201

added the media type application/xml for the response with the status 400

added the media type application/xml for the response with the status 401

added the media type application/xml for the response with the status 403

added the media type application/xml for the response with the status 422

added the media type application/xml for the response with the status 429

added the media type application/xml for the response with the status 503