Adding filtering and sorting options to listing user profiles endpoint

[mario-nt]

The API endpoint for getting the list of user profiles can be improved by accepting the filter and sort query params to allow users to filter and sort user profiles.

Example: http://localhost:3001/users?search=john+doe&pageSize=50&page=1&filter=email+verfied&sorting=UploadedAsc)

Part of torrust/torrust-index-gui#698 & torrust/torrust-index#801