Users Endpoint integration

Issue Name

Integrate Users List from Backend to Frontend

Summary

We need to fetch and display the list of users in the frontend by integrating the backend API endpoint that returns user data. This includes wiring up the API request, handling loading/error states, and rendering the users in the UI.

Steps to Reproduce

Navigate to the part of the app where the users list should appear (e.g., Users page).

Currently, the frontend shows no users or placeholder data.

There is no connection between the frontend and the backend users endpoint.

Current Behaviour

The frontend does not request or show the users list from the backend.
UI shows empty state or mock data.

Expected Behaviour

Users should be displayed in a list/table/grid with relevant fields.
Handle loading and error states gracefully.
Appropriate tests should be added to verify the integration.

PS: make ssure to add the proper tags to the issue