Ability to search/filter users by role

<!-- Please only use this template for submitting feature requests --> **Why is this needed**: We would like to be able to search/filter users by their assigned basicRole, Role or any of the roles. **What would you like to be added**: - Add ability to filter by role in the users page - Add ability to search by role for users Needs to change on the backend and the frontend backend change for the /api/users/search **Who is this feature for?** Anyone