Add a multiple-select role filtering

Issue Summary

Enhance the module functionality by adding a multiple-select field for filtering content based on user roles.

Steps to reproduce

1. Go to the module interface.
2. Look for the current filtering options.
3. Observe that there is no option to filter content by role.

Expected Results

The addition of a multiple-select field in the module's interface to filter content based on selected user roles.

Actual Results

The module currently lacks the ability to filter content by user role using a multiple-select field.

Proposed Solution

Add a new filter option in the module's interface that allows users to filter content based on roles. Users should be able to select multiple roles to filter content accordingly.