Visualize jobs duration given a pipeline (chart, graph)
Somehow similar to https://gitlab.com/gitlab-org/gitlab-ee/issues/1806
I also think it's worth to show this information for all jobs, not only the latest ones, so we would have more idea on how the pipeline actually really looks like, in order to decide what we should optimize for the pipeline.
Questions we might want to ask from this graph:
- Which jobs are flaky, failing a few times and eventually went through?
- Which job is significant slower than the other jobs?
- Which job is blocking the whole pipeline?