[EKS/Fargate] [Volumes]: Add support for EBS volumes to EKS Fargate Containers

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**Tell us about your request**
Allow mounting of at EBS volumes onto EKS pods running on fargate

**Which service(s) is this request for?**
EKS on fargate

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**
We're looking to migrate a cluster from EC2 nodes to Fargate. There are some stateful pods using EBS which is preventing us from adopting fargate.

**Are you currently working around this issue?**
We are staying on standard worker nodes

No repository files, tests, or implementation entry points are named. Start by researching the EKS on Fargate volume limitations and how EBS-backed stateful pods are currently handled on standard worker nodes. Done would mean a defined, supported way to mount EBS volumes on EKS Fargate pods, with the required implementation scope and validation identified.

Written by the indexing model from the issue text.