Add shell scripting guides to development README

Closes #64016

See merge request gitlab-org/gitlab-ce!31467

Update Unicorn Worker recommendation

See merge request gitlab-org/gitlab-ce!31404

Docs - Strongly discourage installing ES on the same server as GitLab

See merge request gitlab-org/gitlab-ce!30169

Remove visual review app feature flag

See merge request gitlab-org/gitlab-ce!31429

Resolve "Remove feature flag for Visual Review App Button"

Closes #11467

See merge request gitlab-org/gitlab-ee!14958

Remove specs for #shift_{after,before}?

Closes #13301

See merge request gitlab-org/gitlab-ee!14994

Refactor passing props to jobs/index.js

See merge request gitlab-org/gitlab-ce!31472

Use groups in CODEOWNERS file

See merge request gitlab-org/gitlab-ce!31477

Resolve "Update troubleshooting for gzip error in backup docs"

Closes #64729

See merge request gitlab-org/gitlab-ce!30884

Let's dogfood https://gitlab.com/gitlab-org/gitlab-ce/issues/53182

That way we don't need to keep this file up to date.

Clarify requirements for custom metrics in docs

See merge request gitlab-org/gitlab-ce!31286

- Also add requirements to the docs for custom metrics.

Clarify requirements for custom metrics in docs

See merge request gitlab-org/gitlab-ee!14912

- Also add requirements to the docs for custom metrics.

Update Gitaly troubleshooting

See merge request gitlab-org/gitlab-ce!30924

Remove sast_container from licensed features

See merge request gitlab-org/gitlab-ee!14980

Further remove code branches by database type (EE)

See merge request gitlab-org/gitlab-ee!14824

These methods don't exist any more.

Fix some Markdown lint errors

See merge request gitlab-org/gitlab-ce!31473

Introduced in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30295

Update rules for secure features

See merge request gitlab-org/gitlab-ce!31432

Remove CephFS from example

See merge request gitlab-org/gitlab-ce!31422

Add minimal partial clone docs

Closes gitaly#1581

See merge request gitlab-org/gitlab-ce!30295

Partial Clone and Sparse Checkout are the native Git approach to enormous
repositories. We should document the state of these features and update as our
support and Git's support for these features improves.

Fix docs review-app stages in the pipeline

See merge request gitlab-org/gitlab-ce!31464