Allow visibility to Reminder Timestamp on IReminder object

Currently GetReminder returns an IReminder object that all it contains is the name of the reminder that was already provided to the method parameter. It would be useful that this method also returns the created date/time so that we can create custom expiration or anything else. Is there a workaround currently ? other than manually connecting to the reminders table and querying it?

Start by locating GetReminder and the IReminder definition in the Orleans repository, then inspect how reminder metadata is created and returned. Done means deciding how the created date/time should be exposed on IReminder and confirming that callers can use it for custom expiration without querying the reminders table directly.

Written by the indexing model from the issue text.