feat: add Google Analytics GA4 (G-LB86GJKBG0)

app/[locale]/layout.tsx

@@ -113,6 +113,19 @@ export default async function RootLayout({
           data-domain="https://marmarislocal.com"
           strategy="afterInteractive"
         />
+        {/* Google Analytics GA4 */}
+        <Script
+          src="https://www.googletagmanager.com/gtag/js?id=G-LB86GJKBG0"
+          strategy="afterInteractive"
+        />
+        <Script id="google-analytics" strategy="afterInteractive">
+          {`
+            window.dataLayer = window.dataLayer || [];
+            function gtag(){dataLayer.push(arguments);}
+            gtag('js', new Date());
+            gtag('config', 'G-LB86GJKBG0');
+          `}
+        </Script>
         <NextIntlClientProvider messages={messages}>
           {!hideNavbarFooter && <Navbar categories={categories} />}
           {children}