refs https://github.com/TryGhost/Team/issues/943
The filter UI behind labs in Admin allows filtering members list across several filters. Since each filter type can have its own specific set of values to choose from, this change adds custom UI based on filter type to select filter value.
refs https://github.com/TryGhost/Team/issues/943
- adds new columns to member list table based on selected filters in UI
- handles dynamic columns in members list with formatted output like for labels
- works behind the filtering feature flag