Group and limit pipeline warnings

What does this MR do?

This MR changes the UX around pipeline warnings.

We now will group the warning instead of using separate callouts for each warning. For now we are using a summary element to have collapsible warnings for a temporary solution. We also set a cap on the warnings to show no more than 25 warnings for a pipeline. There are use cases where a lot of warnings can arise for pipeline configurations.

These warnings are shown in 3 places, CI Lint view, Run manual pipeline view, Pipeline graph view.

Follow up for: #219431 (closed)

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team