feat: devtools

[romhml]

This PR introduces devtools for Nuxt UI. It allows users to browse Nuxt UI components and interact with their props.

How it works

There's two big parts to this implementation:

• DevtoolsRenderer

  • Renders Nuxt UI components using the user's settings
  • it is mounted directly into the end user's app through the main Nuxt module.

• Devtools App

  • A separate standalone app mounted on the Vite server.
  • It displays the ComponentRenderer inside an iframe and communicates with it using custom events.
  • It uses nuxt-component-meta to parse component props and render interactive inputs.

[atinux]

Awesome 😍

Next step would be the Copy Code button I guess (like for assets):

[cloudflare-workers-and-pages]

Deploying ui3 with    Cloudflare Pages

Latest commit:	9dcef0a
Status:	✅  Deploy successful!
Preview URL:	https://88b4cd24.ui-6q2.pages.dev
Branch Preview URL:	https://wip-devtools.ui-6q2.pages.dev

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