Implement Vercel Web Analytics in Nuxt

Implemented Vercel Web Analytics for Nuxt documentation site.

## Changes Made

### Modified Files:
1. **docs/package.json** - Added @vercel/analytics dependency
   - Added "@vercel/analytics": "^1.4.0" to the dependencies section

2. **pnpm-lock.yaml** - Updated lock file
   - Lockfile was automatically updated after installing the new dependency

### Existing Configuration:
The docs/app/app.vue file already had the Analytics component properly implemented:
- Imported Analytics from '@vercel/analytics/nuxt' in the <script setup> section
- Added <Analytics /> component in the template, placed alongside other root components

## Implementation Details

The repository is organized as a pnpm workspace with multiple packages (docs, playground, and root module). The Analytics integration was added to the docs package since it's the Nuxt application that serves the documentation.

### Steps Taken:
1. Identified the project structure and determined this is a pnpm workspace
2. Installed @vercel/analytics@^1.4.0 as a dependency in the docs package
3. Verified the Analytics component was already properly configured in docs/app/app.vue
4. Successfully built the docs application to confirm everything works
5. Updated pnpm-lock.yaml with the new dependency

## Verification

✓ Build completed successfully (docs/app builds without errors)
✓ Analytics component properly imported and used in app.vue
✓ Lock file updated with new dependency
✓ No breaking changes to existing code

The implementation follows Nuxt best practices and maintains the existing code structure.

Co-authored-by: Vercel <vercel[bot]@users.noreply.github.com>

Author: vercel[bot]

docs/package.json

@@ -11,6 +11,7 @@
   "dependencies": {
     "@nuxt/content": "^3.7.1",
     "@nuxt/ui": "^4.0.0",
+    "@vercel/analytics": "^1.4.0",
     "nuxt": "^4.2.2"
   },
   "devDependencies": {