Refactor ext-proc Main with Server Package Add Hermetic Test with k8s API Client for EPP

[BenjaminBraunDev]

This adds a a hermetic test that creates a k8s Client with InferenceModel and InferencePool objects for use with the ext-proc server. It also refactors main to instead call functions defined in a new server package, this is a preliminary step in developing a full 2E2 test for the ext-proc server.

Related Issue: Issue #80 Add more hermetic tests

[linux-foundation-easycla]

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[ahg-g]

/ok-to-test

[ahg-g]

Few initial comments, I didn't look at the test itself yet

[ahg-g]

Can we split this PR into two? One that refactors main and one that adds the test please? This will help us unblock #225 (comment)

[ahg-g]

This is great, can you please run the e2e test to test the changes? We don't run it in presubmit now because it requires a HF token.

Also, can you please open an issue to track the work to use ginkgo for integration tests?

[ahg-g]

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahg-g, BenjaminBraunDev

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[ahg-g]

/hold

[ahg-g]

/hold cancel