Extend routeDirectory to serve CRUDCollections

[taylor1791]

Exporting a CRUDCollection from a route defined using server.routeDirectory should automatically create both endpoints that CRUDCollections make. That is, it should also create the wildcard.

I have no problems implementing this and making a pull request, but I would like some guidance. A first inspection shows that the routeDirectory feature is passed down to oneone and then the detour level. Should I ignore it and write if from scratch or something else?