Add deployment tests in Config Sync installed in Kind cluster

As per my discussion with @nan-yu, let's add another smoke test with Config Sync installed in Kind cluster and try to deploy both the Helm chart and the OCI artifact.

Installation process to follow: https://github.com/GoogleContainerTools/kpt-config-sync/blob/main/docs/installation.md

Need to consider container registry too:
- Local in Kind: https://kind.sigs.k8s.io/docs/user/local-registry/?
- Or maybe public artifact in GHCR for a first iteration?

Start with the Config Sync installation guide linked in the issue, then review the repository's existing smoke-test entry points. Set up Config Sync in a Kind cluster, resolve whether to use Kind's local registry or a GHCR artifact, and verify deployment of both the Helm chart and OCI artifact.

Written by the indexing model from the issue text.