Plugin system

[hitomihiumi]

This pull request sets up the foundation for the Magic Docs documentation app, including configuration, deployment, and core documentation features. The most important changes are grouped below:

Deployment & CI/CD Setup

• Added a GitHub Actions workflow (.github/workflows/deploy.yml) to automatically build and deploy the documentation site to Vercel on pushes and pull requests to main and master branches.
• Added .vercelignore and .gitignore files to ensure only relevant files are deployed and versioned, improving build performance and security. [1] [2]

Documentation App Configuration

• Added a comprehensive next.config.mjs for Next.js, enabling MDX support, optimizing images, customizing Webpack, and configuring experimental features for better performance and flexibility.
• Added package.json with dependencies for Next.js, MDX, Once UI, and supporting libraries, along with scripts for development, build, lint, and deployment.
• Added biome.json to configure code formatting, linting, and import organization for consistent code style.
• Added ESLint configuration (.eslintrc.json) to customize linting rules for React and Next.js.

Core Documentation Features

• Implemented the main dynamic docs page (src/app/(docs)/[...slug]/page.tsx) with support for metadata generation, MDX rendering, navigation, and adjacent page links. (apps/docs/src/app/(docs)/[...slug]/page.tsxR1-R157)
• Added docs layout (src/app/(docs)/layout.tsx) and sidebar integration for structured navigation.
• Created API routes for navigation (src/app/api/navigation/route.ts) and metadata fetching (src/app/api/og/fetch/route.ts) to support dynamic features and Open Graph integration. [1] [2]

Project Documentation & Licensing

• Added README.md with project overview, setup instructions, features, and deployment guidance.
• Included a LICENSE file specifying Creative Commons BY-NC 4.0 licensing for non-commercial use.