Add total count & link header for pagination

[FreddyDevelop]

Description

Adds the Link and X-Total-Count header to list audit logs and list users. The X-Total-Count header returns the total count of the requested resource. The Link header returns urls which can be used for pagination.

E.g. there are 155 registered users and the user list is requested with ?page=5&per_page=10, then

• the X-Total-Count header returns 155
• the Link header returns <http://localhost:8001/users?page=1&per_page=10>; rel="first",<http://localhost:8001/users?page=16&per_page=10>; rel="last",<http://localhost:8001/users?page=6&per_page=10>; rel="next",<http://localhost:8001/users?page=4&per_page=10>; rel="prev"

Tests

To test this just use the admin audit_log and admin users api and look into the returned headers.

Additional context

https://docs.github.com/en/rest/guides/traversing-with-pagination