Make Karpenter.sh work with OpenShift

Feature Overview (aka. Goal Summary)  

Karpenter.sh is an open-source node provisioning project built for Kubernetes. It is designed to simplify Kubernetes infrastructure by automatically launching and terminating nodes based on the needs of your workloads. Karpenter can help you to reduce costs, improve performance, and simplify operations.

Karpenter works by observing the unscheduled pods in your cluster and launching new nodes to accommodate them. Karpenter can also terminate nodes that are no longer needed, which can help you save money on infrastructure costs.

This Feature covers the work which will be done to create a new CAPI provider for Karpenter upstream. The initial scope is to get this working for AWS. This can leverage the CAPI tech preview in OpenShift. CAPI is planned to GA 4.17+. 
Karpenter architecture has a Karpenter-core and Karpenter-provider as components. 
The core has AWS code which does the resource calculation to reduce the cost by re-provisioning new nodes.

Goals (aka. expected user outcomes)

1. Create an MVP for Karpenter+ OCP
2. Create a PoC using AWS API 
3. Create an enhancement document
4. Integrate with CAPI KArpenter-provider 

Out of Scope

Creating a multi-provider cost/pricing operator compatible with CAPI is beyond the scope of this Feature. That may take more time.