Changes to Create speech (text-to-speech)

added the new internal_error enum value to the error/type response property for the response status 400

added the new internal_error enum value to the error/type response property for the response status 401

added the new internal_error enum value to the error/type response property for the response status 404

added the new internal_error enum value to the error/type response property for the response status 502

added the new permission_error enum value to the error/type response property for the response status 400

added the new permission_error enum value to the error/type response property for the response status 401

added the new permission_error enum value to the error/type response property for the response status 404

added the new permission_error enum value to the error/type response property for the response status 502

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

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

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

added the optional property error/provider to the response with the 502 status

endpoint added