feat: initialize shadcn ui

frontend/package.json

@@ -10,14 +10,20 @@
     "lint": "eslint src --ext ts,tsx"
   },
   "dependencies": {
+    "@fontsource-variable/geist": "^5.2.9",
     "@radix-ui/react-slot": "^1.1.0",
     "class-variance-authority": "^0.7.0",
     "clsx": "^2.1.1",
     "lucide-react": "^0.468.0",
+    "next-themes": "^0.4.6",
+    "radix-ui": "^1.6.1",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
+    "shadcn": "^4.12.0",
+    "sonner": "^2.0.7",
     "tailwind-merge": "^2.5.0",
     "tailwindcss-animate": "^1.0.7",
+    "tw-animate-css": "^1.4.0",
     "vite": "^6.0.0"
   },
   "devDependencies": {