[management, reverse proxy] Add reverse proxy feature (#5291)

* implement reverse proxy


---------

Co-authored-by: Alisdair MacLeod <git@alisdairmacleod.co.uk>
Co-authored-by: mlsmaycon <mlsmaycon@gmail.com>
Co-authored-by: Eduard Gert <kontakt@eduardgert.de>
Co-authored-by: Viktor Liu <viktor@netbird.io>
Co-authored-by: Diego Noguês <diego.sure@gmail.com>
Co-authored-by: Diego Noguês <49420+diegocn@users.noreply.github.com>
Co-authored-by: Bethuel Mmbaga <bethuelmbaga12@gmail.com>
Co-authored-by: Zoltan Papp <zoltan.pmail@gmail.com>
Co-authored-by: Ashley Mensah <ashleyamo982@gmail.com>

proxy/web/src/components/PoweredByNetBird.tsx

@@ -0,0 +1,17 @@
+import { NetBirdLogo } from "./NetBirdLogo";
+
+export function PoweredByNetBird() {
+  return (
+    <a
+      href="https://netbird.io?utm_source=netbird-proxy&utm_medium=web&utm_campaign=powered_by"
+      target="_blank"
+      rel="noopener noreferrer"
+      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} />
+    </a>
+  );
+}