feat: add GET endpoint to retrieve contact requests with admin authentication

src/app/api/admin/contacts/route.ts

@@ -5,7 +5,8 @@ import * as jose from 'jose';
 
 export async function GET(request: Request) {
   try {
-    const token = cookies().get('admin_token')?.value;
+    const cookieStore = await cookies();
+    const token = cookieStore.get('admin_token')?.value;
     if (!token) {
       return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
     }