Setup at least one e2e test

[ahg-g]

To verify the end-to-end flow and CRD setup.

[ahg-g]

/assign @liu-cong

[danehans]

@liu-cong any status updates?

[liu-cong]

/assign @kaushikmitr

Example: https://github.com/kubernetes-sigs/jobset/blob/main/test/e2e/e2e_test.go
The ext proc image: us-central1-docker.pkg.dev/k8s-staging-images/llm-instance-gateway/epp:main

[k8s-ci-robot]

@liu-cong: GitHub didn't allow me to assign the following users: kaushikmitr.

Note that only kubernetes-sigs members with read permissions, repo collaborators and people who have commented on this issue/PR can be assigned. Additionally, issues/PRs can only have 10 assignees at the same time.
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In response to this:

/assign @kaushikmitr

Example: https://github.com/kubernetes-sigs/jobset/blob/main/test/e2e/e2e_test.go
The ext proc image: us-central1-docker.pkg.dev/k8s-staging-images/llm-instance-gateway/epp:main

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[liu-cong]

@liu-cong any status updates?

@kaushikmitr is picking this up