Provides a way to display alerts attached to files within the WebIDE.

The first alert shows guidance to users who are editing their CI
configuration about environments, if we are reasonably certain they
don't know about environments.

We need to request the parsed CI configuration while the user edits it,
and accomplish this by watching the content. This watcher is
conditionally created and destroyed when the config file is active.

The getAlert function searches through all available alerts (added
previously), returning the first alert where its show function returns
true, or null if none is found.

Actions to fetch the CI configuration for its given current
content (when it is being edited), as well as to dismiss the callout for
environment guidance are added here.

We parse the CI configuration during the mutation to only retain whether
or not we have:

- sucessfully parsed the CI config, and
- found an environment within the config.

An alert is a message to be displayed in a GlAlert in some conditional
context of the WebIDE. The first alert added, for example, conditionally
shows a message suggesting users investigate the use of environments in
their CI configuration.

An alert has a very specific interface to publicly conform to:

   interface Alert {
     key: Symbol;
     show: (state: WebIdeState, file: File) => boolean;
     props: GlAlertProps;
     dismiss: (store: WebIdeStore) => void;
     message: VueComponent;
   }

- The key must be a unique value, so Symobl is used to ease
  uniqueness (two symbols made with the same key are still unique).

- The show function takes the state of the WebIDE Vue store and the
  currently active file to compute a boolean indicating whether or not
  this alert should be currently shown.

  In this first alert, we only wish to show it if:
  - we are currently on the commit tab
  - we are viewing the root GitLab CI file
  - displaying this alert is enabled for the current user
  - the GitLab CI file has been successfully parsed,
  - and the CI configuration contains no environment configuration

- The props must match the props used to configure a GlAlert

- The dismiss function may optionally take the WebIDE store to execute
  further actions or mutations.

- The message must be a Vue component definition. This is so that rich
  HTML content may be easily used within the message. Currently, it must
  not take any props or attributes, although it should have access to
  the WebIDE store.

As only one alert may be shown at a time, any future alerts with
overlapping conditions must keep in mind that these should be listed by
priority. This is purposely simple to not expose the user to too many
alerts at once. If this is ever converted to a notification system, it
may make sense to alter this.

We will be using the callout mechanism to persist whether or not users
need to be told about using environments with GitLab CI. This
necessitates the ability to call graphql mutations.

We also need to be able to query the graphql API for the fully parsed CI
configuration. Fortunately, that query was already built by the pipeline
editing team, so we can re-use it here.

One thought is that it might be worth it to build our own query to only
fetch a job's environment configuration, instead of the entirety of the
pipeline, but for now re-use is better than new.

Introduce DR mode for CI queueing [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!56658

Subscription Activation Modal: Create Modal Component

See merge request gitlab-org/gitlab!60819

[Feature Flag] Remove merged YAML [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!60659

Fix Structured Logger

See merge request gitlab-org/gitlab!60632

Added new award picker to epics

See merge request gitlab-org/gitlab!61007

Documentation: Adds access token endpoints to OpenAPI

See merge request gitlab-org/gitlab!58620

There's a known set of deficiencies in a CI queueing
that might impact our ability to process builds.

As a way to temporarily mitigate them we allow
to disable them for a very limited period.

Use one feature flag for two related optimizations
and rename defcon to disaster recovery.

Limit commit diffs highlighting [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!53768

updating hover state to match other pipeline graph buttons

See merge request gitlab-org/gitlab!60801

Merge branch 'philipcunningham-eagerly-associate-dast-site-profile-with-validation-if-it-exists-300740' into 'master'

Associate DastSiteProfile and validation on create

See merge request gitlab-org/gitlab!53800

Update Gitaly version

See merge request gitlab-org/gitlab!61121

Merge branch '325339-invite-members-modal-old-form-is-shown-when-member-lock-is-enabled' into 'master'

Fix invite group form being shown when member locked

See merge request gitlab-org/gitlab!60245

Merge branch '329695-add-read_commit_status-field-authorization-to-pipeline-fields-that-can-return-jobs' into 'master'

Resolve "Add `:read_commit_status` field authorization to Pipeline fields that can return jobs" [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!60754

Resolve "Add `:read_commit_status` field authorization to Pipeline fields that can return jobs" [RUN ALL RSPEC] [RUN AS-IF-FOSS]

Initial fix to "all threads must be resolved"

See merge request gitlab-org/gitlab!59689

DevOps Report: Convert Score empty state to Vue

See merge request gitlab-org/gitlab!60715

Fix Openshift template to run on main branch

See merge request gitlab-org/gitlab!60811

Merge branch '329204-packages-registries-settings-refactor-to-use-show-action-instead-of-index' into 'master'

Packages & Registries settings: use `show` instead of `index`

See merge request gitlab-org/gitlab!60621

Fix: Apply VSA filters to records endpoint

See merge request gitlab-org/gitlab!60991

Make instruction clearer for configuring AWS credentials

See merge request gitlab-org/gitlab!60717

Feature flag: limited_diff_highlighting

When a huge file changes, its whole content highlighted
as a plain text anyway:
https://gitlab.com/gitlab-org/gitlab/-/issues/300228

Cached binary detection [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!60128

Resolve "Inverse index on namespaces parent_id, id"

See merge request gitlab-org/gitlab!61098

Fix codequality mr diff report

See merge request gitlab-org/gitlab!59421