Adding a Last-Access cookie to text and mobile requests
Please take a look for details as to what we want to accomplish here:
https://wikitech.wikimedia.org/wiki/Analytics/Unique_clients/Last_visit_solution
Bug: T88813
Bug: T92435
Change-Id: Iea4ceb2fb06929ced5b27b1d9c7d8951a87fca8b