Make pipeline failure Slack notifications prettier and more informative

Closes #32495

See merge request gitlab-org/gitlab-ce!27683

Extract resource_label_events API shared examples

See merge request gitlab-org/gitlab-ce!31156

Move Epic resource label API to its own spec

See merge request gitlab-org/gitlab-ee!14845

Refactor elements used by ci_variable and ::CICD

See merge request gitlab-org/gitlab-ce!30922

Many elements defined in the QA framework in ci_variable.rb
call elements and methods that are not framework specific.

Fix these issues, as well as use data-qa-selector s

Add frozen_string_literal to spec/factories

See merge request gitlab-org/gitlab-ce!31129

Fixes broken specs on parsers/security

Closes #13080

See merge request gitlab-org/gitlab-ee!14868

fix: updates labels to include units in metrics

Closes #59325

See merge request gitlab-org/gitlab-ce!30330

This MR updates the y_label values and the label
values in common_metrics and cluster_metrics to
append the units of measurement to the labels.

Fix pid discovery for Unicorn in PidProvider

See merge request gitlab-org/gitlab-ce!31056

Remove code related to object hierarchy and MySQL

Closes #65056 and #65055

See merge request gitlab-org/gitlab-ce!31095

[EE] Remove code related to object hierarchy in MySQL

See merge request gitlab-org/gitlab-ee!14820

Find build by sha from ref

Closes #64534 and #45697

See merge request gitlab-org/gitlab-ce!30843

Fixtures were changed on CE, but not updated on EE.

CE MR that updated the fixtures:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/31146

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/13080

Multi-select for projects dropdown filter

See merge request gitlab-org/gitlab-ee!14720

This commit enables multiselect for the projects
dropdown filter. This is required for cycle analytics
and will soon be used for productivity analytics too.

This is required as multiple projects need to be selected.

Support indentation in the markdown editor

See merge request gitlab-org/gitlab-ee!14585

Remove fallback to deployment_platform_cluster in `DeploymentMetrics`

See merge request gitlab-org/gitlab-ce!31126

Add MR table component for Productivity Analytics

See merge request gitlab-org/gitlab-ee!14757

- Add MR table and MR table row component
- Add table styles
- Update PO file
- Add specs
- Add snapshots
- Add mw-90 utility class

Add severity for vulnerabilities

See merge request gitlab-org/gitlab-ce!31146

Move license management reports backend for pipeline

See merge request gitlab-org/gitlab-ee!14796

This end point will be exposed in haml
End point exposed in mr controller

(CE Port) Add MR table component for Productivity Analytics

See merge request gitlab-org/gitlab-ce!30975

Fix error rendering submodules in MR diffs when there is no .gitmodules

See merge request gitlab-org/gitlab-ce!31162

Resolve "Conan Skeleton API"

See merge request gitlab-org/gitlab-ee!14805

The initial structure for the Conan API endpoints
is set up to allow for future API development.