feat: add leptos

Signed-off-by: kjuulh <contact@kjuulh.io>

examples/leptos-build/testdata/crates/hackernews_axum/src/lib.rs

@@ -0,0 +1,49 @@
+use cfg_if::cfg_if;
+use leptos::{component, view, IntoView};
+use leptos_meta::*;
+use leptos_router::*;
+mod api;
+pub mod error_template;
+pub mod fallback;
+pub mod handlers;
+mod routes;
+use routes::{nav::*, stories::*, story::*, users::*};
+
+#[component]
+pub fn App() -> impl IntoView {
+    provide_meta_context();
+    view! {
+
+        <>
+            <Link rel="shortcut icon" type_="image/ico" href="/favicon.ico"/>
+            <Stylesheet id="leptos" href="/pkg/hackernews_axum.css"/>
+            <Meta name="description" content="Leptos implementation of a HackerNews demo."/>
+            <Router>
+                <Nav />
+                <main>
+                    <Routes>
+                        <Route path="users/:id" view=User/>
+                        <Route path="stories/:id" view=Story/>
+                        <Route path=":stories?" view=Stories/>
+                    </Routes>
+                </main>
+            </Router>
+        </>
+    }
+}
+
+// Needs to be in lib.rs AFAIK because wasm-bindgen needs us to be compiling a lib. I may be wrong.
+cfg_if! {
+    if #[cfg(feature = "hydrate")] {
+        use wasm_bindgen::prelude::wasm_bindgen;
+
+        #[wasm_bindgen]
+        pub fn hydrate() {
+            _ = console_log::init_with_level(log::Level::Debug);
+            console_error_panic_hook::set_once();
+            leptos::mount_to_body(move || {
+                view! {  <App/> }
+            });
+        }
+    }
+}