[Feature] 本地数据导出导入支持更细的选择

[GOWxx]

你想要什么功能或者有什么建议？

希望设置-本地-导出数据可以有更细的导出选项，目前是全部导出，包括 对话、配置、面具 等， 希望可以

• 单独导出导入指定对话/对话集
• 单独导出导入指定面具/面具集

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Title: [Feature] Local data export and import supports more detailed selections

**What features do you want or have any suggestions? **

I hope that Settings-Local-Export Data can have more detailed export options. Currently, all are exported, including conversations, configurations, masks, etc. I hope I can

• Export and import specified conversations/conversation sets individually
• Export and import specified masks/mask sets individually

[SnowCharmQ]

I have mentioned it before. #2827

[jkjoker]

导出时希望能附带时间戳，时间戳是笔记的一部分。谢谢

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When exporting, you hope to include a timestamp, which is part of the note. Thanks