PIDS11 — The supported_traits operation returns trait names but not types

Summary: Issue: "Client needs trait-type awareness so it can type-validate
interactive trait entries"

The supported_traits operation returns trait names but not types, leaving
the client unable to proactively validate trait entry. While the current
spec provides for the server
to throw InvalidTraitFormat on a bad date, It would be better to allow
the client to know a priori that the Birth Date is a date so that it can,
for example put up a visual date picker or otherwise validate the date
before the
user has tabbed on to other fields.