✨ [Feature]: Tabs功能，为什么key只能是 string 类型，不能是 number或 string类型, 而且为什么不能有 extra 额外的插槽

[G-Akiraka]

What problem does this feature solve

1、使用的时候key 可能是number类型，但是实际使用中，只能是 string 这种就不合理，导致我想需要id数据，那么必须先转换 string，然后其他地方在转换回来，其他ui框架别人同时志成2种类型 2、添加额外插槽，这样就可以在最右边可以自定义很多功能，比如增加按钮

What does the proposed API look like

没有

What is your project name

quark

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Title: ✨ [Feature]: Tabs function, why the key can only be of string type, not number or string type, and why there cannot be extra extra slots

[G-Akiraka]

其中一大堆类似都有这种问题，必须string 就很奇怪，正常应该都支持 string和number才对

[Issues-translate-bot]

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A lot of them have this kind of problem. It's strange that string is required. Normally, string and number should be supported.