feat: createApp support lifetimes hooks

[Simon-He95]

Vue version

v3

Link to minimal reproduction

vue ceateApp api

Steps to reproduce

What is expected?

When we use createApp, I have no way of knowing when append is called on my element, because I may need to operate or obtain information at that time, in the upper layer, instead of defining onMounted in the App component.
I know that this modification of the parameters of the existing createApp may be a destructive change. If a new api is provided, such as createNewApp, it can be designed like this. Or there is a better design to make it easier to extend

What is actually happening?

createApp just accept props

System Info

No response

Any additional comments?

No response

[LinusBorg]

import { creatApp, h } from 'vue'
import App from 'App.vue'

const app = createApp({
  onMounted() {
    // do what you need here
  },
  render: () =>  h(App)
})

[Simon-He95]

@LinusBorg，This is a solution I didn't expect, thanks, but I have one more question。

when mounted, mount(div), the div children don't have element

[LinusBorg]

That would depend on the implementation of that component. Seems that it rendered nothing, maybe because of a v-if? I cant tell without seeing it

[Simon-He95]

That would depend on the implementation of that component. Seems that it rendered nothing, maybe because of a v-if? I cant tell without seeing it这将取决于该组件的实现。似乎没有渲染任何内容，也许是因为 v-if？不亲眼所见我无法分辨

It’s pure html without any js logic.

[Simon-He95]

I will give you a warehouse address later. Are you interested in helping track it down?

[LinusBorg]

Have you checked that cur.component is actually containing the component at the moment of rendering?