make a proper -owide kubectl output

current state:

```
$ kubectl get objectstore -A
NAMESPACE NAME AGE
keycloak keycloak 20h
postgresql quizservicedb 29m
```

But if I would invoke the kubectl get -oyaml I see additional information in status field like:

```
status:
serverRecoveryWindow:
quizservicedb: {}
```

I would like to get additional columns in `kubectl get` command output which would give me more understanding about the status of objectstore - does it work, are the credentials correct etc. Maybe the last database backup timestamp.

首先将当前的 `kubectl get objectstore -A` 输出与 `kubectl get -oyaml` 显示的字段进行比较，尤其是状态信息。确定哪些状态指标和备份时间戳应成为列，然后验证 objectstore 输出是否清晰且一致地展示了这些信息。

由索引模型根据 Issue 内容生成。