Whenever a git push takes more than 50 seconds the user
will receive a trace from each check performed along with
their timings

Enable frozen string for the following files:

* lib/gitlab/auth/**/*.rb
* lib/gitlab/badge/**/*.rb
* lib/gitlab/bare_repository_import/**/*.rb
* lib/gitlab/bitbucket_import/**/*.rb
* lib/gitlab/bitbucket_server_import/**/*.rb
* lib/gitlab/cache/**/*.rb
* lib/gitlab/checks/**/*.rb

Partially addresses #47424.

This whitelists all existing offenses for the various CodeReuse cops, of
which most are triggered by the CodeReuse/ActiveRecord cop.

This makes accessing LFS Objects for a project easier

  project.lfs_storage_project.lfs_objects`

becomes

  project.all_lfs_objects

This will make the refactor in
https://gitlab.com/gitlab-org/gitlab-ce/issues/39769 easier to deal
with.