Changes to Create a category

the request property entrant_max_entries became not nullable

the request property promoted became not nullable

api tag Categories added

api tag Category 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