Feature request: persist route (don't unmount when navigate out)

[illiaChaban]

Describe the bug

Not a bug, but no templates for feature requests.

I want to be able to avoid rerendering a previously visited route and the route should keep all the internal state.

"persist?: boolean" prop would be nice Syntax proposal:

<Routes><Route path="/" persist element={...} /> </Routes>

The way I accomplish it right now:

        <Routes>
          <Route path="/" element={<Home />} />
          <Route path="/stack" />
          ...
        </Routes>
        <PersistRoute path="/stack" component={StackTest} />


export const PersistRoute = (p: { path: string; component: FC }) => {
  const match = useMatch(() => p.path)

  let dispose: () => void | undefined
  const render = once(() => {
    return createRoot(_dispose => {
      dispose = _dispose
      return <p.component />
    })
  })

  onCleanup(() => dispose?.())

  return <Show when={match()}>{render()}</Show>
}

Your Example Website or App

https://github.com/solidjs/solid-router

Steps to Reproduce the Bug or Issue

None

Expected behavior

When <Route> has "persist" prop it should mount the component on first visit and not cleanup on navigate out

Screenshots or Videos

No response

Platform

all

Additional context

No response