samples: Kueue cohort tutorial samples

[rbarberop]

This PR contains the yaml examples for the new Kueue tutorial using cohorts for resource sharing.

It contains v1beta1 code, so this PR should be blocked by kubernetes-sigs/kueue#532

Original v1alpha2 code is still on each file for reference. That part should be deleted on each file before merging.

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[snippet-bot]

Here is the summary of changes.

You are about to add 6 region tags.

• batch/kueue-cohort/flavors.yaml:15, tag gke_batch_kueue_cohort_flavors
• batch/kueue-cohort/spot-cq.yaml:15, tag gke_batch_kueue_cohort_spot_cq
• batch/kueue-cohort/team-a-cq.yaml:15, tag gke_batch_kueue_cohort_team_a_cq
• batch/kueue-cohort/team-a-job.yaml:15, tag gke_batch_kueue_cohort_team_a_job
• batch/kueue-cohort/team-b-cq.yaml:15, tag gke_batch_kueue_cohort_team_b_cq
• batch/kueue-cohort/team-b-job.yaml:15, tag gke_batch_kueue_cohort_team_b_job

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[rbarberop]

FYI @alculquicondor

[alculquicondor]

LGTM, pending removal of old yamls.

[Shabirmean]

@rbarberop can you update this branch with the latest changes from the base branch?

[Shabirmean]

We shall bypass CLA check for @charlieyu1996 since he was a Googler when the commits were made!

[alculquicondor]

Remove old yamls

[rbarberop]

Unable to merge due to local repo issues. Will open a new PR.