Add support for volumeAttributesClassName in storage configuration

[scholzj]

VolumeAttributesClass introduces to Kubernetes new way how to manage the performance class of the PVCs. Unlike a Storage Class that is immutable, the Volume Attributes Class allows users more flexibility when configuring parameters of the storage such as IOPS, throughput etc. This is something what comes up from time to time from a Strimzi users in our forum. Currently, it is often managed through various annotations. It would be nice to support the configuration of the VolumeAttributesClass / volumeAttributesClassName in PVCs and in out storage configuration.

[scholzj]

Discussed on a community call on 22.8.2024:This would be a useful feature. A proposal should be written to clarify the API changes, storage diffing changes etc.