Make the free drill path faceted navigation customizable wrt which facets are available at which moment

Currently, free drill path means, that you can start with any facet, and start the faceted navigation from there. Most likely, for real apps, this means you need to add frontend logic as 'when to show which facets'. Thus, suppose we have facets configured to be 'year', 'month' and 'day'

Most likely, you want to 'limit' the free drill path, that 'month' is only available after 'year' has been chosen, and day after month. If you can configure this in the faceted nav node, this will mean that the logic won't have to be hardcoded in frontends