refs #12160
This flag will allow us easier filtering of members via the API
* Added status column to members table
This flag will be used to determine if a member is free or paid, rather
than relying on joins with the customers and subscriptions tables.
* Added migration to populate members.status
As we add the column with a default value of "free" we only need to care
about the paid members here. We also preemptively handle migrations for
SQLite where there are > 998 paid members.
