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

先從 CKS 支援的版本頁面，以及 issue 中連結的 CloudStack CSI 驅動程式和 Kubernetes provider 文件開始，接著追蹤 CKS ISO 如何設定 Kubernetes 整合。完成的標準是為 CKS 叢集中的 Kubernetes 資源定義並實作對 Velero 和 Kasten 這兩個備份 provider 的支援，並提供適當的文件和驗證。

由索引模型根據 Issue 內容生成。