Please add support for ephemeral-storage in resources and limits

Currently the helm-chart is not supporting ephemeral-storage in resources and limits. We should be able to set that. See https://zesty.co/finops-glossary/kubernetes-ephemeral-storage/

```yaml
resources:
requests:
ephemeral-storage: "1Gi"
limits:
ephemeral-storage: "2Gi"
```

Start by locating where the Helm chart defines and renders container resources and limits, then compare its values structure with the YAML example in the issue. Add support for setting ephemeral-storage requests and limits, and verify that the rendered manifests preserve the supplied values.

Written by the indexing model from the issue text.