add plugin for vercel

pages/_app.jsx

@@ -1,8 +1,14 @@
 import { ThemeProvider } from 'next-themes'
+import { SpeedInsights } from "@vercel/speed-insights/next"
+import { Analytics } from "@vercel/analytics/react"
 
 export default function App({ Component, pageProps }) {
     return (
         <ThemeProvider attribute='class'>
+            {/* SpeedInsights in vercel */}
+            <SpeedInsights />
+            {/* Analytics in vercel */}
+            <Analytics />
             <Component {...pageProps} />
         </ThemeProvider>
     )