docs(next): generate llamacloud api (#1377)

apps/next/.gitignore

apps/next/package.json

apps/next/scripts/generate-docs.mjs

apps/next/src/app/(home)/page.tsx

apps/next/src/app/docs/[[...slug]]/page.tsx

apps/next/src/app/layout.config.tsx

apps/next/src/components/create-app-animation.tsx

apps/next/src/content/docs/cloud/index.mdx

apps/next/src/content/docs/cloud/meta.json

apps/next/src/content/docs/llamaindex/index.mdx

apps/next/src/content/docs/llamaindex/meta.json

apps/next/src/content/docs/meta.json

apps/next/src/lib/source.ts

apps/next/tailwind.config.js

pnpm-lock.yaml