chore: added sitemap

Author: idosius

.env.example

@@ -1 +1,2 @@
+NEXT_PUBLIC_BASE_URL=
 NEXT_PUBLIC_GOOGLE_SITE_VERIFICATION=

src/app/sitemap.ts

@@ -0,0 +1,19 @@
+import type { MetadataRoute } from 'next'
+
+export default function sitemap(): MetadataRoute.Sitemap {
+  const baseUrl = process.env.NEXT_PUBLIC_BASE_URL
+  return [
+    {
+      url: `${baseUrl}/`,
+      lastModified: new Date(),
+      changeFrequency: 'monthly',
+      priority: 1,
+    },
+    {
+      url: `${baseUrl}/quiz`,
+      lastModified: new Date(),
+      changeFrequency: 'monthly',
+      priority: 0.8,
+    },
+  ]
+}