initial commit, add Publish, add minimal theme, add content

Content/Archive/220123-ff.de v10 felixfoertsch.github.io/_layouts/category.html

@@ -0,0 +1,18 @@
+---
+layout: page
+---
+
+{% unless page.content == '' %}
+{{ content }}
+{% endunless %}
+
+<ul class="posts-list">
+  {% assign category = page.category | default: page.title %}
+  {% for post in site.categories[category] %}
+  <li>
+    <a href="{{ post.url | relative_url }}">{{ post.title }}</a>
+
+    {% include date-badges.html %}
+  </li>
+  {% endfor %}
+</ul>