支持可见时间范围设置：3天、30天之类的。

[skyue]

Is your feature request related to a problem?

应该很多人把memos当微博用，很多分享是即兴的，时间久了可能不合时宜，回去一个个删除或调整为仅自己可见，都比较费事。这方面微信确实把人性拿捏的很到位。

Describe the solution you'd like

支持设置超过N天（对比创建时间）的Memos可见范围设置：

• 仅登录可见
• 仅自己可见

有个细节：针对置顶的不做处理。

Additional context

No response

[Issues-translate-bot]

Issue is not in English. It has been translated automatically.

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Title: Support visible time range setting: 3 days, 30 days and so on.

[athurg]

I'm interested to add this feature.

We can add a user setting to set how many days the public memos will be shown. While people other than the creator will not fetch the memos edit/create before N days.