feat: add rss feed

src/content/pages/rss.njk

@@ -0,0 +1,29 @@
+---
+permalink: /rss.xml
+layout: null
+eleventyExcludeFromCollections: true
+excludeFromSitemap: true
+---
+<?xml version="1.0" encoding="utf-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom">
+  <title>{{ meta.siteName }}</title>
+  <subtitle>{{ meta.siteDescription }}</subtitle>
+  <link href="{{ meta.url }}/feed.xml" rel="self"/>
+  <link href="{{ meta.url }}/" rel="alternate" type="text/html"/>
+  <id>{{ meta.url }}/</id>
+  <author>
+    <name>{{ meta.author }}</name>
+  </author>
+  {% for post in collections.post %}
+  <entry>
+    <id>{{ meta.url }}{{ post.url }}</id>
+    <title>{{ post.data.title | escape }}</title>
+    <link href="{{ meta.url }}{{ post.url }}"/>
+    <published>{{ post.date }}</published>
+    {%- for tag in post.data.tags %}
+    <category term="{{ tag }}" />
+    {%- endfor %}
+    <content type="html">{{ post.content | escape }}</content>
+  </entry>
+  {% endfor %}
+</feed>