templates: Add a template for web applications

templates/webapp/app/src/main.rs

@@ -0,0 +1,40 @@
+use log::Level;
+use yew::prelude::*;
+use yew_router::prelude::*;
+
+#[derive(Routable, Debug, Clone, Copy, PartialEq, Eq)]
+enum Route {
+    #[at("/")]
+    Index,
+    #[at("/404")]
+    #[not_found]
+    NotFound,
+}
+
+#[function_component]
+fn App() -> Html {
+    html! {
+        <BrowserRouter>
+            <main>
+                <Switch<Route> render={switch} />
+            </main>
+        </BrowserRouter>
+    }
+}
+
+fn switch(route: Route) -> Html {
+    match route {
+        Route::Index => html! {
+            "Index"
+        },
+        Route::NotFound => html! {
+            "Page not found"
+        },
+    }
+}
+
+fn main() {
+    console_log::init_with_level(Level::Debug).unwrap();
+
+    yew::Renderer::<App>::new().render();
+}