feat: add support for tags ordering

_includes/layouts/base.njk

@@ -27,7 +27,7 @@ layout: layouts/parent.njk
     <div class="card">
         <h2>{{ tag }}</h2>
         <ul>
-            {%- for post in collections[tag] -%}
+            {%- for post in collections[tag] | sort(false, true, "data.order") -%}
             <li><a href="{{ post.url }}">{{ post.data.title }}</a></li>
             {%- endfor -%}
         </ul>