Feature: TimeTableRequest doesn't have the feature to set the language #1
Description
According to the API doc, the ResRobotTimeTable API can take language as a request parameter.
https://www.trafiklab.se/api/trafiklab-apis/resrobot-v21/timetables
But the SDK doesn't have this feature.
This issue also linked to trafiklab/resrobot-php-sdk#4