feat: Add Karpenter on EKS managed node group with EKS Pod Identity and cluster access entry

[bryantbiggs]

Description

• Add Karpenter on EKS managed node group with EKS Pod Identity and cluster access entry

Motivation and Context

• This demonstrates how customers can run Karpenter on EKS managed node group, as well as how to utilize EKS Pod Identity for the controller's permissions
• This also highlights the various components that are required to thread throughout resources for discoverability by the controller

How was this change tested?

• Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• Yes, I have updated the docs for this feature
• Yes, I ran pre-commit run -a with this PR

Additional Notes

[rodrigobersa]

LGTM