Context:
See parent ticket and kickoff meeting notes.
This ticket is to implement custom bucktes for dateVariables. A similar selection as the one we have for the StartDate/EndDate groupBys needs to be added to the report configuration.
AT:
- the report configuration includes information on how to group date Variables
- this selection is only present when the report groups by a date variable
- by default, the selected option is "automatic"
- Migration?