Some minor restructuring and improvements

frontend/src/demo.rs

@@ -0,0 +1,17 @@
+use leptos::*;
+
+#[leptos::component]
+pub fn demo() -> impl leptos::IntoView {
+    let params = leptos_router::use_params_map();
+    let id = move || params.with(|params| params.get("id").cloned().unwrap_or_default());
+
+    let demo_info = create_resource(|| (), move |_| async move {
+        let res = reqwasm::http::Request::get(&format!("/api/demos/{}/info", id())).send().await.unwrap();
+        dbg!(res.text().await);
+        0
+    });
+
+    view! {
+        <h2>Demo - {id}</h2>
+    }
+}