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

examples/svg_basic.rs

@@ -1,6 +1,6 @@
 use dioxus::prelude::*;
 
-fn app(cx: Scope) -> Element {
+fn app() -> Element {
     cx.render(rsx!( svg {
         width: "200",
         height: "250",