Expect to increase the split split component

[wsxe9988]

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

What problem does this feature solve?

将一个面板分割成两个可以调整宽度或高度的两部分。用direction控制分割方向。面板分割可以嵌套使用。

What does the proposed API look like?

参考https://arco.design/vue/component/split

[github-actions]

Hello @wsxe9988. We totally like your proposal/feedback, welcome to send us a Pull Request for it. Please send your Pull Request to proper branch, fill the Pull Request Template here, provide changelog/TypeScript/documentation/test cases if needed and make sure CI passed, we will review it soon. We appreciate your effort in advance and looking forward to your contribution!

你好 @wsxe9988，我们完全同意你的提议/反馈，欢迎直接在此仓库创建一个 Pull Request 来解决这个问题。请将 Pull Request 发到正确的分支，务必填写 Pull Request 内的预设模板，提供改动所需相应的 changelog、TypeScript 定义、测试用例、文档等，并确保 CI 通过，我们会尽快进行 Review，提前感谢和期待您的贡献。

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.