Add another attempt with python

rust_warp_svelte/ui/src/routes/NotFound.svelte

@@ -0,0 +1,10 @@
+<script lang="ts">
+    export let redirect;
+</script>
+
+<main>
+    <div>
+        404 -- Not Found
+    </div>
+    <button on:click={() => redirect("/")}>Back to home</button>
+</main>