Changes to Open a realtime session

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 429

added the new internal_error enum value to the error/type response property for the response status 501

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 429

added the new permission_error enum value to the error/type response property for the response status 501

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 429 status

added the optional property error/provider to the response with the 501 status

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

added the new optional query request parameter call_id

the query request parameter model became optional

added the non-success response with the status 404

added the non-success response with the status 429

endpoint added