Support for Veeam (kasten) and Velero as backup solutions for resources present in a Cks cluster

### The required feature described as a wish

As a User/Admin/Operator I would like to take a back up of the kubernetes resources present in the cks using

https://velero.io/
https://docs.kasten.io/latest/

During the cks iso creation, it would be great if cloudstack can add support the backup providers for k8s

https://docs.cloudstack.apache.org/en/4.22.0.0/plugins/cloudstack-kubernetes-service.html#kubernetes-supported-versions

It's similar to the support for CSI and kubernetes provider

https://docs.cloudstack.apache.org/en/4.22.0.0/plugins/cloudstack-csi-driver.html
https://docs.cloudstack.apache.org/en/4.22.0.0/plugins/cloudstack-kubernetes-provider.html

从 CKS 支持的版本页面以及 issue 中链接的 CloudStack CSI 驱动和 Kubernetes provider 文档开始，然后追踪 CKS ISO 如何配置 Kubernetes 集成。完成的标准是为 CKS 集群中的 Kubernetes 资源定义并实现对 Velero 和 Kasten 这两个备份 provider 的支持，并提供适当的文档和验证。

由索引模型根据 Issue 内容生成。