✨ [Feature]: 让页面路代码的由引入更优雅

[YuPeng6688]

What problem does this feature solve

项目中上 page-layout.vue 文件中已经有现成的 router-view ，完全可以实现在每个页面中直接复用，没必要在每个页面单独空出来一个文件在写 router-view

What does the proposed API look like

现在代码样式看起来比较新手的感觉，一种为了实现功而去实现的感觉，让代码复用性更好，看起来更优雅

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Title: ✨ [Feature]: Make the introduction of page code more elegant