Add a pages content type and move page files

source/_pages/presentations.html.twig

@@ -0,0 +1,19 @@
+---
+layout: page
+title: Presentations
+use: [presentations]
+---
+
+<p>Since September 2012, I have given {{ get_presentation_count(data.presentations) }} public talks and workshops at various conferences and meetups, in-person and remotely, on topics including PHP, Drupal, automated testing, Git, CSS, and systems administration.</p>
+
+{% for presentation in data.presentations|sort((a, b) => a.events|last.date|date('U') > b.events|last.date|date('U') ? -1 : 1) %}
+  <article>
+    <div class="not-prose">
+      <h2 class="text-xl font-bold">
+        <a class="font-bold text-blue-primary dark:text-blue-400" href="{{ presentation.url|trim('/', 'right') }}">{{ presentation.title }}</a>
+      </h2>
+    </div>
+
+    <p>{{ presentation.description }}</p>
+  </article>
+{% endfor %}