Feat: first work for rsx vscode ext

examples/hello_web.rs

@@ -1,9 +1,6 @@
-fn main() {
-    println!("Hello world!");
-    println!("Hello world!");
-    println!("Hello world!");
-    println!("Hello world!");
-    println!("Hello world!");
-    println!("Hello world!");
-    println!("Hello world!");
-}
+//! Example: Hello-web
+//! -----------------
+//!
+//! This example showcases Dioxus-websys to build interactive single-page-applications, much like React.
+
+fn main() {}