Changes to Create a new knowledge base

added the pattern \S to the request property kbName

added the media type application/x-www-form-urlencoded to the request body

added the optional property error/requestId to the response with the 400 status

added the optional property error/requestId to the response with the 401 status

added the optional property error/requestId to the response with the 403 status

added the optional property error/requestId to the response with the 404 status

added the optional property error/requestId to the response with the 500 status

added the optional property error/requestId to the response with the 503 status

endpoint added