Add a Jekyll configuration with the notes collection

_config.yml

@@ -0,0 +1,4 @@
+collections:
+  notes:
+    output: true
+    permalink: /:slug/

_notes/test.md

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+---
+title: "Hello World"
+layout: default
+---
+
+Hello World

notes.html

@@ -1,23 +0,0 @@
----
-title: "Notes"
-layout: default
----
-
-<h1>Notes</h1>
-
-<p>I've moved publishing to my [Substack](https://bchendev.substack.com?utm_source=bchen.dev). For reference, old notes remain accessible here.</p>
-
-<p></p>
-
-{% assign posts_by_month = site.posts | group_by_exp: "post", "post.date | date: '%B %Y'" %}
-{% for month in posts_by_month %}
-  <h2>{{ month.name }}</h2>
-  <ul>
-    {% for post in month.items %}
-      <li>
-        <time>{{ post.date | date: "%Y.%m.%d" }}</time>
-        <a href="{{ post.url }}">{{ post.title }}</a>
-      </li>
-    {% endfor %}
-  </ul>
-{% endfor %}