feat: add Vue Vapor Mode benchmark

[zhsama]

Summary

• Add a standalone Vue Vapor Mode implementation of the Weather Front benchmark.
• Use Vue 3.6.0-rc.2 with <script setup vapor> components and createVaporApp.
• Register Vapor-specific development, build, lint, test, documentation, and benchmark configuration.

Why

Vue Vapor Mode uses compiler-generated direct DOM updates instead of the traditional virtual DOM path. Adding it as a separate implementation makes that mode measurable without changing the existing Vue benchmark.

Impact

The existing framework implementations remain unchanged. Contributors can run the new app through the generated vue-vapor root commands.

Validation

• npm run build:vue-vapor
• npm run lint:vue-vapor
• npx playwright test --config=tests/config/playwright-vue-vapor.config.js --reporter=dot — 22 passed
• python scripts/verify/validate_schemas.py
• Source-analysis, bundle-size, and build-time benchmark checks passed locally