Initialize Next.js frontend application

[Hamzaa6296]

Description:

What needs to be done

• Setup Next.js 14 inside apps/frontend
• Configure TypeScript
• Install and configure Tailwind CSS
• Install and configure shadcn/ui
• Setup Redux Toolkit with store
• Configure axios for API calls
• Setup environment variables

Acceptance Criteria

• Frontend runs on http://localhost:3000
• Tailwind CSS classes working
• Redux store accessible in components
• API base URL loaded from .env