carousel modify the automatic carousel interval time

[beenqi]

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

What problem does this feature solve?

自定义轮播间隔时间

What does the proposed API look like?

组件添加 timeout： 2000ms 属性 设置间隔时间

[zkwolf]

可以用autoplaySpeed

[github-actions]

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