Add "frequently visited" sort option to projects GraphQL query

For https://gitlab.com/gitlab-org/gitlab/uploads/b251a944440ef1ff5679b2368566b528/Organization___Overview___Dropdown.png

On the Organization front page we need to be able to display the 5 most frequently visited projects. To do this we need a sort option added to the GraphQL query that is being built in #409312 (closed)

Implementation guide

We can follow the work that is being done as part of #421443

That is about Groups, this is about Projects.