feat: upgrade to rust nostr 0.28

apps/desktop2/src/routes/splash.tsx

@@ -0,0 +1,9 @@
+import { createFileRoute } from "@tanstack/react-router";
+
+export const Route = createFileRoute("/splash")({
+  component: Screen,
+});
+
+function Screen() {
+  return <div>Loading..</div>;
+}