feat: added site map

sitemap.njk

@@ -0,0 +1,15 @@
+---
+permalink: /sitemap.xml
+eleventyExcludeFromCollections: true
+---
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  {%- for page in collections.all %}
+  {%- if page.url and page.url != "/sitemap.xml" and not page.data.excludeFromSitemap %}
+  <url>
+    <loc>{{ site.url }}{{ page.url }}</loc>
+    <lastmod>{{ (page.data.updatedAt or page.data.createdAt or page.date) | isoDate }}</lastmod>
+  </url>
+  {%- endif %}
+  {%- endfor %}
+</urlset>