add desktop server functions example

Cargo.toml

@@ -25,9 +25,10 @@ members = [
     "packages/server",
     "packages/server/server-macro",
     "packages/server/examples/axum-hello-world",
+    "packages/server/examples/axum-router",
+    "packages/server/examples/axum-desktop",
     "packages/server/examples/salvo-hello-world",
     "packages/server/examples/warp-hello-world",
-    "packages/server/examples/axum-router",
     "docs/guide",
 ]