Allow adding incremental refresh schedules via the REST API

[eschranz]

https://help.tableau.com/current/api/rest_api/en-us/REST/rest_api_ref.htm#add_data_source_to_schedule

I've checked both TSC and the REST API and there doesn't seem to be a way to add incremental refresh schedules programatically. I can only add full refresh schedules to datasources/workbooks.

I'm able to add incremental schedules manually and automate task refresh runs via TSC's Tasks API, but getting the schedule added to begin with is a challenge.

[jacalata]

This is being worked on internally. I can see you also opened this in the tableau-server-client repo, which is where we more actively track functionality requests, so I'll close this one.
link for reference: tableau/server-client-python#1101