Waiting time in the queue for each CI job in Prometheus metrics

Hi!

I am running GitLab 16.2.7 and GitLab Runner 16.0.1 (all self-hosted).

Using the Prometheus metrics and Grafana, is there a way to know for each CI job how much time it spent in a queue? The available queue metrics for GitLab Runner are just histogram-type metrics, and this is not what I am looking for.