DatePicker组件是否计划支持 "half-year"「按半年」模式

[xingorg1]

• I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

BI报表系统，对于时间筛选和能支持的类型要求较多。

目前项目中已经实现，如果有计划的话，我可以贡献具体实现代码。如果其他人有需要的话，也可以私聊我沟通。

What does the proposed API look like?

picker="half_year" or mode="half_year"

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[github-actions]

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