aws_eks: Add ImagePullSecrets support to cluster.addServiceAccount

[lumattr]

Describe the feature

K8s now supports to ability to add registry credentials to the Service account for services. but there isnt a way to add those details through the cdk helper functions. only throu

Use Case

Id like to be able to continue using the helpers

Proposed Solution

No response

Other Information

https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/#verify-that-imagepullsecrets-are-set-for-new-pods

Acknowledgements

• [ ] I may be able to implement this feature request
• [ ] This feature might incur a breaking change

CDK version used

2.118.0

Environment details (OS name and version, etc.)

Ubuntu 22.04.3 LTS

[tim-finnigan]

Thanks for the feature request!