Be able to set annotation on PVC spec

[TomBillietKlarrio]

Problem Statement

Setting parameters on AWS-EBS volumes can be done dynamically, but this is not possible to control this via koperator

Proposed Solution

See: https://github.com/kubernetes-sigs/aws-ebs-csi-driver/blob/master/docs/modify-volume.md
You can't change parameters in a storageclass, since a storageclass is immutable. Changing a storage-class in order to change something like troughput/iops is able rather overkill. Settings this as annotation on the PVC would be a nice solution.
The AWS-CSI driver supports this, it's just that you can't set PVC annotation in the kafkacluster spec. So I think that should be rather doable to add.