Merge Queue: Multiple Queues Per Repo with Grouped Selector

Previously, a repo could only have one queue. Now you can create additional queues from the merge queue creation page. The repo selector shows repos that already have queues and how many exist.

You can now run multiple merge queues in the same repository, each targeting a different branch. Previously, a repo could only have one queue. Now you can create additional queues from the merge queue creation page. The repo selector shows repos that already have queues and how many exist. The settings page supports switching between queues via a branch selector with colored state indicators (green = Running, yellow = Paused). The dashboard selector groups repos with multiple queues so you can tell them apart at a glance.