Fix RSpec/BeNil rubocop offenses

Fixes `Link` cop offenses within `CommitStatusPresenter` by explicitly
calling `help_page_path` with string literal arguments and adding the
missing `.md` extensions.

Add conan V2 endpoint: GET /api/v4/projects/:id/packages/conan/v2/conans/:package_name/:package_version/:package_username/:package_channel/revisions/:recipe_revision/files/:file_name

Changelog: added

Adds a new service that will be used to perform the first step
of migrating a certificate based Kubernetes cluster to use the
GitLab agent. The service creates an agent, an agent token, and
a migration tracking record. In the future, it will use the
cluster and agent details to install the agent into the linked
cluster.

Also included is a basic frontend and controller action, which
serves as a starting point for frontend development.

Both the service and the frontend changes are controlled by
the `cluster_agent_migrations` feature flag.

Changelog: added

Rename index.md to _index.md and update crosslinks
from other docs and code files.

Changelog: changed

Rename index.md to _index.md and update crosslinks

Also rename index files for user/namespace, user/operations_dashboard,
and user/organization, and update crosslinks.

Also user/group devops_adoption, epics, import, and issues_analytics.
Updates crosslinks from other docs and UI.

Changelog: changed

Changelog: fixed

Also updates all crosslinks including from UI code

Changelog: changed

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Add yml and ignore_column

Remove batch column from down step

Move ignore_column to ce

Changelog: added

Changelog: fixed

Add a new diff_lines endpoint for the rapid diffs project.

Changelog: added

Changelog: fixed

Fix RSpec/BeEmpty Rubocop offenses

Changelog: changed

Changelog: changed

Fix Layout/SpaceInsideParens Rubocop offenses

Changelog: added

Adds fields duplicated_to_work_item_url,
moved_to_work_item_url and promoted_to_epic_url
to work item GraphQL type.

Changelog: other

Changelog: added

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Changelog: changed

This reverts commit 45c0eb6f93a4e54c0e5f15c38f6a699c75ddc21c.

- https://gitlab.com/gitlab-org/gitlab/-/merge_requests/174093

Changelog: changed

This removes an already enabled feature flag for secret push
protection feature.

Changelog: removed
EE: true

Checking for SAST IaC and Advanced SAST jobs was incorrect. This change
improves the checking of those jobs, while also maintaining checking of
plain SAST jobs.

Changelog: fixed

Changelog:added

Changelog: added

Changelog: changed
EE: true

Add a new static role that defines Product Manager abilities

Add group policies for Planner role

Add project policies for Planner role

Add issue, epic and issuable policies

Changelog: added

- we have broken off the backend concerns from this class
  and now can fully consider this a presenter.
- see https://gitlab.com/gitlab-org/gitlab/-/issues/503176