Update to sveltekit 1.0

src/routes/+layout.svelte

@@ -0,0 +1,31 @@
+<script>
+    import Nav from '../components/Nav.svelte';
+    import userManager from '../components/UserManager.svelte'
+    import Modal from '../components/Modal.svelte'
+    import Footer from '../components/Footer.svelte'
+
+    export let segment;
+</script>
+
+<style>
+    :global(html[data-theme='dark']) {
+        --background-color: #222222;
+        --headings-color: #ffffff;
+        --font-color: #ffffff;
+    }
+
+    :global(body) {
+        font-family: 'Open Sans', sans-serif;
+        font-size: 1rem;
+        background-color: var(--background-color);
+        color: var(--font-color);
+        box-sizing: border-box;
+    }
+</style>
+
+<Modal/>
+<Nav {segment} rightComponent={userManager}/>
+
+<slot></slot>
+
+<Footer/>