Adding sitemap.xml and robots.txt

docs/src/robots.njk

@@ -0,0 +1,7 @@
+---
+permalink: /robots.txt
+eleventyExcludeFromCollections: true
+---
+Sitemap: {{ site.url }}/sitemap.xml
+User-agent: *
+Disallow:

docs/src/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 not page.url.startsWith('/fragments/') %}
+            <url>
+                <loc>{{ site.url }}{{ page.url | url }}</loc>
+                <lastmod>{{ page.date.toISOString() }}</lastmod>
+            </url>
+        {% endif %}
+    {% endfor %}
+</urlset>