Extend Meta data able to be fetched about a Session

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Is your feature request related to a problem? Please describe the problem.

I am trying to implement an actuator for sesssions modeled on the spring defintiion: https://docs.spring.io/spring-boot/docs/current/actuator-api/htmlsingle/#sessions

### Describe the solution you'd like

I would like it to be possible to fetch from the session state additional information about the session such as:

- Created datetime
- last update datetime
- The idle timeout

In the event a user is logged in it should be possible to both fetch the username for that session.

### Additional context

n/a