Changes to Define content types and attributes

added required request body

api operation id api_v3_content_types_create was added

the endpoint scheme security bearerAuth was added to the API

added the non-success response with the status 400

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 422

added the non-success response with the status 503

added the success response with the status 200

added the success response with the status 201

added the success response with the status 204