[Must Have] Implement review option

The users must be able to add a review to their host, respectively their guest.
This review should be displayed on their profile for the admin to be able to see if there are any issues with any of the hosts or refugees.
The review should be:
- a 1 to 5 stars
- a message box.

Start by tracing the host and guest profile flows and the admin view where user issues are reviewed. Confirm where review data should be stored and displayed, then verify that users can submit a 1–5-star rating and message for a host or guest and that admins can see those reviews on the relevant profile.

Written by the indexing model from the issue text.