Move Design Management models to FOSS

See merge request gitlab-org/gitlab!30015

Gitlab/Json autocorrects in /ee

See merge request gitlab-org/gitlab!30625

Add initial statistics for WAF installations

See merge request gitlab-org/gitlab!28331

docs: Fixed small typo

See merge request gitlab-org/gitlab!30953

Remove unused cluster configuration workers

Closes #27481

See merge request gitlab-org/gitlab!30695

Quarantine pull mirroring spec while we investigate the issue

See merge request gitlab-org/gitlab!30954

This change is part of
https://gitlab.com/gitlab-org/gitlab/-/issues/212566 to move all Design
Management code to FOSS.

This MR moves:

- Models
- Factories
- Design repository-related code

The repository-related code has been included because the models and
model specs rely on design repositories to be working.

Decouple partial clone config

See merge request gitlab-org/gitlab!30354

Previously partial clone configs is coupled with receive_max_input_size
check. This make sense when you think of partial clone as a replacement
for Git LFS but in truth, the 2 features are separated and should not be
 decoupled.

In self-managing instances, `receive_max_input_size` could be set to 0
while users could still wish to have partial clone feature enabled.

References:
- [Original discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/16850#note_313323533)
- [Tracking issue](https://gitlab.com/gitlab-org/gitlab/-/issues/212926)

Configure connection pools for ActionCable

See merge request gitlab-org/gitlab!29725

Raise Internal Server Error on 500 in `api_get_from`

See merge request gitlab-org/gitlab!30844

So that a resource should not treat it as ResourceNotFoundError and
try to create a new resource.

Use ActionCable's worker pool size to determine connection pool size

Fix failing spec in ee/spec/features/boards/sidebar_spec.rb

Closes #216364

See merge request gitlab-org/gitlab!30945

Switch Gitlab::JSON to JSON for helm3_client

Closes #216365

See merge request gitlab-org/gitlab!30944

If the sidebar Ajax request finishes after loading the Ajax request for
a specific issue, it will clear the assignee, leading to the test
failure. We work around this issue by waiting for the initial request to
be done.

https://gitlab.com/gitlab-org/gitlab/-/issues/216364

Update re2 gem to v1.2.0

See merge request gitlab-org/gitlab!30942

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/216365

The latest re2 library released on Homebrew does not compile with this
gem: https://github.com/mudge/re2/issues/40. Update this gem to make
that work.

Merge branch '216349-update-tests-metadata-uninitialized-constant-gitlab-in-rspec_flaky-report' into 'master'

Fix error when running update-tests-metadata in master

Closes #216349

See merge request gitlab-org/gitlab!30940

We can't use Gitlab::Json here because this is a standalone Ruby script
and we don't load the Rails environment.

We fixed the same problem in https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30937
but we missed another instance of the same problem

Fix update-tests-metadata CI step failing in master

Closes #216349

See merge request gitlab-org/gitlab!30937

https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30627 changed
`JSON.parse` to `Gitlab::JSON.parse`, but the latter isn't available in
the simple CI script since it doesn't load a Rails environment.

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/216349

Revert CODEOWNERS validation of Web requests in diff check

See merge request gitlab-org/gitlab!30936

This reverts commit 4d73ef61.

This was causing merges to fail when groups were used in CODEOWNERS:
https://gitlab.com/gitlab-org/gitlab/-/issues/216345.

Seed metrics dashboard with example heatmap charts

See merge request gitlab-org/gitlab!29323

Update CI to test with Ruby v2.6.6

See merge request gitlab-org/gitlab!30909

Part of https://gitlab.com/gitlab-org/gitlab/-/issues/198579

Remove metrics_dashboard_visibility_switching_available feature flag

See merge request gitlab-org/gitlab!29718

Move Milestone methods to Timebox

See merge request gitlab-org/gitlab!30128

Introduce `skip_live_env` RSpec meta and add it to tests

Closes gitlab-org/quality/team-tasks#493

See merge request gitlab-org/gitlab!30661

Add check for new email addition in audit test

Closes #207741

See merge request gitlab-org/gitlab!30679

Gitlab/Json cop autocorrects in /lib

See merge request gitlab-org/gitlab!30627