Integrate 'Pipeline Visualizer' into GitLab
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=508903) </details> <!--IssueSummary end--> The ~"group::developer tooling" team has developed the [Pipeline Visualizer](https://gitlab.com/gitlab-org/quality/engineering-productivity/pipeline-visualizer) to visualize job durations and the critical path of pipelines. This is very useful, especially when debugging larger pipelines. GitLab currently does not have a built-in tool to visualize job durations, so integrating a small version of the visualizer into the product would already be beneficial for users to improve pipeline efficiency. :efficiency: <!-- template sourced from https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitlab/issue_templates/Default.md -->
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