[Question]polar_basebackup 需要增加备份目标的可选项

[digoal]

Describe the problem

目前仅支持全部备份.
https://apsaradb.github.io/PolarDB-for-PostgreSQL/zh/operation/backup-and-restore.html

希望可以增加选择备份目标内容:
include 必要本地文件 include 本地实例 include 共享文件 all exclude 本地实例 exclude 共享文件

[polardb-bot[bot]]

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