增加是否允许被其他alist站点挂载选项

[youyou-sudo]

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

想让别人不用密码访问我的alist站点，但不想让其他人用alist挂载我的站

希望增加一个是否允许别人挂载站点的开关或选项

Suggested solution / 实现思路

No response

Additional context / 附件

No response

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