Add token trouble shooting scripts as rake tasks under a new Token management category

We currently have a few maintenance and administration related rake tasks https://docs.gitlab.com/ee/raketasks/. It will make it easier for users to discover and action token expiration related administration options by adding the scripts in https://docs.gitlab.com/ee/security/token_overview.html#troubleshooting as rake tasks under a Token management or similar category.

Rake tasks are added under https://gitlab.com/gitlab-org/gitlab/-/tree/master/lib/tasks/gitlab?ref_type=heads but will need to be backported to older GitLab versions so be usable.