Added login and authentication

src/routes/+layout.svelte

@@ -1,12 +1,28 @@
 <script lang="ts">
     import "../app.css";
     import favicon from "$lib/assets/favicon.svg";
+    import { afterNavigate } from "$app/navigation";
+    import { isAuthenticated } from "$lib/Auth.svelte";
 
     let { children } = $props();
+
+    let renderit = $state(false);
+
+    afterNavigate(() => {
+        isAuthenticated()
+            .then(() => {
+                renderit = true;
+            })
+            .catch(() => {
+                renderit = true;
+            });
+    });
 </script>
 
 <svelte:head>
     <link rel="icon" href={favicon} />
 </svelte:head>
 
-{@render children?.()}
+{#if renderit}
+    {@render children?.()}
+{/if}