Fix the router and stub out a number of crates to get compiling

examples/readme.rs

@@ -8,8 +8,8 @@ fn main() {
     dioxus_desktop::launch(app);
 }
 
-fn app(cx: Scope) -> Element {
-    let mut count = use_state(cx, || 0);
+fn app() -> Element {
+    let mut count = use_state(|| 0);
 
     cx.render(rsx! {
         h1 { "High-Five counter: {count}" }