feat(ui): basic layout

app/composables/usePageTitle.ts

@@ -0,0 +1,15 @@
+export const usePageTitle = () => {
+  const pageName = useState<string>('pageName', () => '');
+  const title = computed<string>(() => (pageName.value.length > 0 ? `${pageName.value} - Tímmál` : 'Tímmál'));
+
+  const setPageName = (newName: string) => {
+    pageName.value = newName;
+    useHead({ title: title.value });
+  };
+
+  return {
+    title: readonly(title),
+    pageName: readonly(pageName),
+    setPageName,
+  };
+};