希望增加显示容量功能

[Eternal-Future]

Please make sure of the following things

• I have read the documentation.
• I'm sure there are no duplicate issues or discussions.
• I'm sure this feature is not implemented.
• I'm sure it's a reasonable and popular requirement.

Description of the feature / 需求描述

增加网盘显示容量功能（剩余容量/总容量）
在对于一下仅支持登录一个客户端的网盘相对比较方便一点（比如115网盘，挂载alist之后再次登录客户端会掉线）
对于挂载多个网盘的人会让容量情况一目了然
不需要一个个开客户端查看容量
该功能可由管理员自行选择是否开启
对于挂载本地存储/FTP等不显示总容量的由管理员手动设置总容量

Suggested solution / 实现思路

No response

Additional context / 附件

No response

[welcome]

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[github-actions]

See

1. 50% 希望能加入搜索功能 #1740
2. 50% 希望添加虚拟目录功能 #856
3. 50% 希望增加文本文件修改功能 #762

[BoYanZh]

我猜，无此计划，不过欢迎pr。

[xhofe]

我猜，无此计划，不过欢迎pr。

yep

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