Add proxy auth ui

proxy/web/src/components/PoweredByNetBird.tsx

@@ -0,0 +1,12 @@
+import { NetBirdLogo } from "./NetBirdLogo";
+
+export function PoweredByNetBird() {
+  return (
+    <div className="flex items-center justify-center mt-8 gap-2 group cursor-pointer">
+      <span className="text-sm text-nb-gray-400 font-light text-center group-hover:opacity-80 transition-all">
+        Powered by
+      </span>
+      <NetBirdLogo size="small" mobile={false} />
+    </div>
+  );
+}