feat(analytics): update Google Analytics integration and improve fetch interception

- Refactored Google Analytics proxy routes in the Next.js configuration to enhance fallback handling.
- Improved fetch interception logic in the RootLayout component for more robust handling of Google Analytics requests, including support for `sendBeacon`.
- Updated the analytics script source to align with new API routes for better tracking accuracy.

app/api/gtm/[id]/route.ts

@@ -0,0 +1,47 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+export async function GET(
+  request: NextRequest,
+  { params }: { params: { id: string } }
+) {
+  const { id } = params;
+  
+  try {
+    const response = await fetch(
+      `https://www.googletagmanager.com/gtag/js?id=${id}`,
+      {
+        headers: {
+          'User-Agent': request.headers.get('user-agent') || '',
+        },
+      }
+    );
+
+    if (!response.ok) {
+      return new NextResponse('Script not found', { status: 404 });
+    }
+
+    const scriptContent = await response.text();
+    
+    // Modificar URLs internas do script para usar o proxy
+    const modifiedScript = scriptContent
+      .replace(
+        /https?:\/\/[^\/]*google-analytics\.com\/g\/collect/g,
+        '/api/metrics'
+      )
+      .replace(
+        /https?:\/\/[^\/]*google-analytics\.com/g,
+        '/api/metrics'
+      );
+
+    return new NextResponse(modifiedScript, {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/javascript',
+        'Cache-Control': 'public, max-age=3600',
+      },
+    });
+  } catch (error) {
+    console.error('GTM proxy error:', error);
+    return new NextResponse('Proxy error', { status: 500 });
+  }
+}