Add CI testing for tools/dynamic-lora-sidecar

[shotarok]

What would you like to be added:

Add CI testing for the Python unit tests in tools/dynamic-lora-sidecar to run automatically on each PR.

Why is this needed:

The dynamic-lora-sidecar has unit tests (test_sidecar.py) but they're not run in CI. This means code changes could break the sidecar without detection, risking code quality and functionality regressions.

[shotarok]

@kfswain Hello, is it possible to get your review or feedback on the above test-infra PR since k8s-ci-robot mentioned you? I attached the logs of the local run with kind on the PR description. Please let me know if I should put additional information. Thanks

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