feat: created rss feed

feed.njk

@@ -0,0 +1,28 @@
+---
+permalink: /feed.xml
+eleventyExcludeFromCollections: true
+---
+<?xml version="1.0" encoding="utf-8"?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+  <channel>
+    <title>Volpe</title>
+    <link>{{ site.url }}/</link>
+    <description>Blog posts from Volpe</description>
+    <language>en</language>
+    <atom:link href="{{ site.url }}/feed.xml" rel="self" type="application/rss+xml"/>
+    {%- for post in collections.posts | reverse %}
+    <item>
+      <title>{{ post.data.title | escape }}</title>
+      <link>{{ site.url }}{{ post.url }}</link>
+      <guid isPermaLink="true">{{ site.url }}{{ post.url }}</guid>
+      <pubDate>{{ post.data.createdAt.toRFC2822() }}</pubDate>
+      {%- if post.data.updatedAt %}
+      <atom:updated>{{ post.data.updatedAt.toISO() }}</atom:updated>
+      {%- endif %}
+      {%- if post.data.description %}
+      <description><![CDATA[{{ post.data.description }}]]></description>
+      {%- endif %}
+    </item>
+    {%- endfor %}
+  </channel>
+</rss>