Implement generic keyset pagination

See merge request gitlab-org/gitlab!51481

This change implements low level generic keyset pagination utilities.

Also fixes two GraphQL queries using the new lib:

- Order merge_requests by merged_at
- Order projects by similarity score

Add database sourced aggregated metric [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!53854

Port essential database metrics to Sidekiq

See merge request gitlab-org/gitlab!56005

Run eslint on node scripts and configs

See merge request gitlab-org/gitlab!56133

This re-adds our config/, scripts/ and *.config.js files to eslint,
together with some rules to make it a little easier for those
node-scripts, e.g. console logging or importing node or dev dependencies
should be fine.

Fix RuboCop offenses for Lint/HashCompareByIdentity

See merge request gitlab-org/gitlab!56186

Removes the Disk IO tag from various queues

See merge request gitlab-org/gitlab!56145

Handle RestClient errors in Discord integration

See merge request gitlab-org/gitlab!56112

Merge branch '323227-experiment-cleanup-experiment-with-adding-social-sign-in-options-to-trial-registration-page' into 'master'

Social sign in options to trial registration [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!55533

Sort milestones within autocomplete dropdown

See merge request gitlab-org/gitlab!55850

Display success message after successfully adding a namespace

See merge request gitlab-org/gitlab!53332

Add branch selector to on-demand scans form

See merge request gitlab-org/gitlab!55684

Add the RefSelector component to the on-demand scans form. It lets user
pick a branch to be associated with the scan. It defaults to the
project's default branch.

Remove Kubernetes requirement from Auto Deploy

See merge request gitlab-org/gitlab!56058

Quarantine flaky tests

See merge request gitlab-org/gitlab!56187

Add handling for large pipeline timeouts

See merge request gitlab-org/gitlab!55523

Add times fn to spec, use internal method
Fix spec broken in merge

Remove Chrome 84 icon workaround

See merge request gitlab-org/gitlab!56114

Add `use-deprecated-sizes` to icons that use deprecated sizes

See merge request gitlab-org/gitlab!55638

Improve explanation of on-call participants creation

See merge request gitlab-org/gitlab!56139

Add help text and tooltips - Dast site profile form

See merge request gitlab-org/gitlab!55728

For exclude urls, request header fields
- Add instructions and tooltip
- Add max length constraint

Widgetize sidebar iteration component

See merge request gitlab-org/gitlab!54895

Turn iteration_select.vue into a widget

Remove redundant stylelint rules

See merge request gitlab-org/gitlab!56030

Move batch size to a constant.

See merge request gitlab-org/gitlab!55935

Separate Gitaly configuration information

See merge request gitlab-org/gitlab!55714

Support composer v2 metadata-url

See merge request gitlab-org/gitlab!54906

Adds metadata-url field and additional
api to support composer v2.

Update feature spec for release creation

See merge request gitlab-org/gitlab!56004

This commit updates the feature spec that covers release creation
through the UI.

Restructure layout of Add/Update approval rule form

See merge request gitlab-org/gitlab!55181

- Removed unnecessary containers
- Updating descriptions to use the label classes and match GitLab UI
- Moved inputs around
- Updated buttons to new variants
- Rewrote the branches_select to use GlDropdown
- Fixed console warnings

Fix dropdown z-index issue

See merge request gitlab-org/gitlab!56125

Upgrade gitlab-styles to 6.1.0

See merge request gitlab-org/gitlab!55110

Remove `licensed` type from Feature Flags [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!52597