added admin layout

app/[locale]/(protected)/layout.tsx

@@ -0,0 +1,17 @@
+import Navbar from '@/app/[locale]/(protected)/_components/navbar'
+
+interface ProtectedLayoutProps {
+  children: React.ReactNode;
+}
+
+const ProtectedLayout = ({ children }: ProtectedLayoutProps) => {
+  return (
+    <main
+      className="w-full h-full flex flex-col justify-center items-center gap-y-10 bg-[radial-gradient(ellipse_at_top,_var(--tw-gradient-stops))] from-sky-400 to-blue-800">
+      <Navbar/>
+      {children}
+    </main>
+  )
+}
+
+export default ProtectedLayout