feat: Add framework-specific cursor rules for Next.js, React, TypeScr…

[christoph2806]

Add Framework-Specific Cursor Rules

This PR adds comprehensive .cursorrules files for major frameworks and technologies, providing specific guidelines and best practices for each technology stack.

Added Rules Files

• nextjs.mdc: Next.js App Router and Server Components patterns
• react.mdc: Modern React patterns and hooks usage
• typescript.mdc: TypeScript strict typing guidelines
• python.mdc: Python with Flask and SQLite patterns
• fastapi.mdc: FastAPI modern API patterns
• vue.mdc: Vue.js with Composition API
• svelte.mdc: Svelte and SvelteKit patterns
• node-express.mdc: Node.js/Express patterns
• database.mdc: Prisma and Supabase patterns
• tailwind.mdc: Tailwind CSS and UI components

Features

Each rules file includes:

• Specific glob patterns for file matching
• Framework-specific best practices
• Performance optimization guidelines
• Testing and security practices
• Code organization patterns
• Development workflow recommendations

Implementation Details

• All files use consistent frontmatter format with description and globs
• Rules are organized in logical sections
• Each section contains specific, actionable guidelines
• Focus on modern practices and patterns
• Emphasis on type safety and security

Testing

The rules have been verified to:

• Use correct glob patterns
• Follow consistent formatting
• Provide clear, actionable guidelines
• Cover essential aspects of each technology

Next Steps

• Add more framework-specific rules
• Enhance existing rules with more detailed examples
• Add cross-framework integration patterns
• Include more security guidelines