[EMR on EKS] [request]: Flink support for EMR on EKS

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**Tell us about your request**

We would love to be able to use EMR on EKS to use [Apache Flink](https://flink.apache.org/).

**Which service(s) is this request for?**
EMRContainers / EMR on EKS

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**

We are trying to use Flink to process data streams in our data mesh architecture.

**Are you currently working around this issue?**

We are using the [Apache Flink Operator](https://nightlies.apache.org/flink/flink-kubernetes-operator-docs-main/). However since we are also using EMR on EKS for Spark jobs, we would love to be able to only have a single solution to solve both of these needs.

**Additional context**

EMR already supports Apache Flink.

**Attachments**
If you think you might have additional information that you'd like to include via an attachment, please do - we'll take a look. (Remember to remove any personally-identifiable information.)

Start by reviewing the EMRContainers / EMR on EKS service context and the linked Apache Flink and Flink Kubernetes Operator references. Define what Flink support alongside Spark would include and how completion would be verified; the issue does not identify repository files or tests.

Written by the indexing model from the issue text.