[Feature request] K8s guidelines on backup & recovery best practices

### Search before asking

- [x] I searched in the [issues](https://github.com/apache/iotdb/issues) and found nothing similar.

### Motivation

There is no official guideline on what is the recommended approach for backup and recovery in K8s? I know this is more of an "Enterprise Feature" ask but it would really help to at least state if volume snapshots are safe to be used for backup and recovery purposes for IoTDB.

### Solution

_No response_

### Alternatives

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

No se especifican archivos ni pruebas del repositorio. Revisa primero la documentación existente sobre backup y recovery de IoTDB y las indicaciones para Kubernetes; después, determina si los snapshots de volumen son seguros para el backup y recovery de IoTDB y documenta la recomendación compatible.

Escrito por el modelo de indexación a partir del texto del issue.