Changes to Create a new post

added the new optional request property imageAlt

added the new optional request property authorIds

added the new optional request property bodyJson

the request property markdown became optional

removed the optional property error from the response with the 400 status

removed the optional property error from the response with the 401 status

removed the optional property error from the response with the 404 status

removed the optional property error from the response with the 500 status

added the new optional request property scheduledAt

added the required property status to the response with the 200 status

added the new optional request property status

request property categories list-of-types was widened by adding types string to media type application/json

request property sendNewsletter list-of-types was widened by adding types string to media type application/json

endpoint added