Hi, what is the recommended best way to set up tables in our data warehouse in order to structure metrics most efficiently? We have many experiments tracking the same metrics and we'd like to only have to define each metric once within GrowthBook. Is it ideal to have one table with one row per experiment x user x variant or should the source table have a row for each "event" (i.e. more like a clickstream table)? (cc @ambitious-apartment-58735)