Build failures summary page for pipelines

What

Creates a 'Failures' tag on pipelines page, showing a build log for each failed jobs in one place. Similar to the failed pipeline email.

Why

When I visit the builds page what I really want access to is the actual error messages. I don't care about pipeline graphs or successful stages, and don't want to have to click into each job one at a time.

Currently I have to change to the Jobs tab, scroll to find the failures and then have to click into each failure one by one. When using the new dropdown I find it tricky to open each build in a new tab, and can't use it when arriving from slack.

Screenshots

Next iteration

Once this is merged an issue will be created to do the following

• Consider fragment caching for job trace summaries (https://gitlab.com/gitlab-org/gitlab-ce/issues/31959)
• Show don't count jobs without traces towards limit, or show jobs with traces first (https://gitlab.com/gitlab-org/gitlab-ce/issues/31984)
• Group jobs by stage (https://gitlab.com/gitlab-org/gitlab-ce/issues/31984)
• Make this the default tab when there are failures (https://gitlab.com/gitlab-org/gitlab-ce/issues/31962)

Acceptance criteria

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Conform by the merge request performance guides

What are the relevant issue numbers?

Closes #24883 (closed)