solid vike nested layouts

This is a repro for my PR at: vikejs/vike-solid#86 that implements Nested Cumulative Layouts for Vike Solid.

1. Make sure you cloned https://github.com/vikejs/vike-solid
2. cd vike-solid/vike-solid and type pwd in the terminal to get the directory. Copy that.
3. Make sure to pnpm build and pnpm link .
4. Clone this repo somewhere and go to package.json and replace the absolute url after link: with your absolute url.

    "vike-solid": "link:/Users/carlo/Desktop/Projects/vike-solid/vike-solid"

5. pnpm install and pnpm dev to start the server.

vike-solid-nested-finally-works.mp4