Extract shared functionality from ProjectTreeRestorer

See merge request gitlab-org/gitlab!21243

This MR extracts a lot of functinality
from ProjectTreeRestorer into RelationTreeRestorer
 in order to introduce a new GroupTreeRestorer
that is going to utilize this logic as well.

This MR Also changes a few other classes
to make them compatible with groups.

Add documentation for new "merge immediately" workflow for merge trains

See merge request gitlab-org/gitlab!21060

Add new dep scanning var for python requirements

Closes #8524

See merge request gitlab-org/gitlab!21219

- Update mr id in changelog
- Add new dependency scanning var
- Fix position of var

Fix error in spec description

See merge request gitlab-org/gitlab!21290

Remove duplicate eslint-plugin-import dependency

See merge request gitlab-org/gitlab!21396

Personal Access Token Expiration Notification

See merge request gitlab-org/gitlab!19296

It adds a worker (cron) that runs every day at 1AM that will notify the
user that some of its tokens are about to be expired.

..

Improve the 'Diagnosing unhealthy Review App releases' guide

See merge request gitlab-org/gitlab!20856

Use git grep to search for conflict headers

Closes #24008

See merge request gitlab-org/gitlab!20937

Remove existing integrations from contributions

See merge request gitlab-org/gitlab!21342

Merge branch '14857-new-metric-button-not-visible-when-prometheus-app-installed-on-group-instance-clusters' into 'master'

Fix Prometheus integration with group/instance clusters

See merge request gitlab-org/gitlab!19692

When installing application on group level cluster, we need to
create services for each project that belongs to this group.
That's why we need to traverse through all group connected projects.

Persist and control auto stop date for environments

See merge request gitlab-org/gitlab!19931

Cleanup container CSS for Geo Nodes

See merge request gitlab-org/gitlab!21203

This mainly goes back to a simple top down flow on the headers
Instead of using floats and fixed margins

Use margin over flex grow

Decouple button and h2

Check for existence of gitaly-ruby Gemfile

See merge request gitlab-org/gitlab!21340

Use LFS for PDF fixture

See merge request gitlab-org/gitlab!20932

Create GraphQL API for Snippets

See merge request gitlab-org/gitlab!20613

Merge branch '35228-create-a-new-endpoint-to-copy-common_metrics-yml-to-the-local-project' into 'master'

Create a new endpoint to copy common_metrics.yml to the local project

Closes #35228

See merge request gitlab-org/gitlab!20616

NuGet - API Skeleton

See merge request gitlab-org/gitlab!20825

Retrieve issues from subgroups when rendering group milestone

See merge request gitlab-org/gitlab!21024

Crosslink docs for better coverage

See merge request gitlab-org/gitlab!21336

This commit persists and controls auto stop date for environments

Remove coverage hack from Karma

See merge request gitlab-org/gitlab!21386

Gated behind a feature flag
Added authentication based on http basic auth
Added Service index response

Merge branch '27796-fix-the-following-style-lint-errors-and-warnings-for-app-assets-stylesheets-pages-profile-scss' into 'master'

Fix style-lint errors and warnings for profile.scss

Closes #27796

See merge request gitlab-org/gitlab!20048

Resolve the stylelint-gitlab/utility-classes error by
removing the .description class in profile.scss and
replacing its usage in gpg_keys and keys views with
the .text-truncate utility class.

Analytics: Group and project dropdown enhancements

See merge request gitlab-org/gitlab!21302

Force clearing of deprecated cache key

See merge request gitlab-org/gitlab!21184

.

Adjust iframe csp for tracing page

See merge request gitlab-org/gitlab!21156

rules: for bridge jobs

See merge request gitlab-org/gitlab!19605