feat: add AI-generated study plan creation dialog and API integration

- Implemented CreatePlanDialog component for generating study plans using AI.
- Integrated postAPI function for handling API requests.
- Updated planes.tsx to include AI plan generation logic.
- Modified usuarios.tsx to enable email confirmation for new users.
- Added Switch component for UI consistency.
- Created api.ts for centralized API handling.
- Developed carreras.tsx for managing career data with filtering and CRUD operations.
- Added CarreraFormDialog and CarreraDetailDialog for creating and editing career details.
- Implemented CriterioFormDialog for adding criteria to careers.

package.json

@@ -20,6 +20,7 @@
     "@radix-ui/react-select": "^2.2.6",
     "@radix-ui/react-separator": "^1.1.7",
     "@radix-ui/react-slot": "^1.2.3",
+    "@radix-ui/react-switch": "^1.2.6",
     "@radix-ui/react-tabs": "^1.1.13",
     "@supabase/supabase-js": "^2.55.0",
     "@tailwindcss/vite": "^4.1.12",