What would you like to be added:

It would be great if we can have an insight about what's our queueing system looks like at real time

• for administrators, it helps to understand the total resource usages in-between cluster queues and whether we should make them a cohort
• for batch users, they will have an overview about the job queueing, how many jobs are pending for scheduling, how long jobs are waiting.

Overall, it's a great enhancement especially for production env.

Why is this needed:

A big enhancement and a great insight of kueue system.

Completion requirements:

This enhancement requires the following artifacts:

• Design doc
• API change
• Docs update

The artifacts should be linked in subsequent comments.

Some advices here:

• For administrators:
  • clusterQueue resource groups
  • clusterQueue resource utilizations
  • localQueues
  • cohorts
• For users:
  • jobs with their status