add speed insights

package.json

@@ -41,6 +41,7 @@
     "@radix-ui/react-tooltip": "^1.2.6",
     "@t3-oss/env-nextjs": "^0.13.4",
     "@vercel/analytics": "^1.5.0",
+    "@vercel/speed-insights": "^1.2.0",
     "better-auth": "1.2.9-beta.1",
     "cheerio": "^1.0.0",
     "class-variance-authority": "^0.7.1",
@@ -155,6 +156,7 @@
     ],
     "onlyBuiltDependencies": [
       "@tailwindcss/oxide",
+      "@vercel/speed-insights",
       "esbuild",
       "sharp"
     ]