Add pipeline graph
What does this MR do?
Adds pipeline visualization
What are the relevant issue numbers?
Closes #18141 (closed)
Part of #19982 (closed)
Screenshots (if relevant)
GitLab 15.0 is launching on May 22! This version brings many exciting improvements, but also removes deprecated features and introduces breaking changes that may impact your workflow. To see what is being deprecated and removed, please visit Breaking changes in 15.0 and Deprecations.
Adds pipeline visualization
Closes #18141 (closed)
Part of #19982 (closed)