refactor: ♻️ move post meta into importable macro

src/includes/postmeta.macro.njk

@@ -0,0 +1,18 @@
+{% macro postmeta(params) %}
+  <ul class="flex flex-wrap items-center gap-4 *:inline-flex *:items-center *:gap-1 *:*:stroke-sky-600">
+    <li>
+      {% lucide "calendar", {"size": "20"} %}
+      <time datetime="{{ params.date | isoDate }}" title="{{ params.date | longDate }}">
+        {{ params.date | readableDate }}
+      </time>
+    </li>
+    <li>
+      {% lucide "user", {"size": "20"} %}
+      <a href="{{ params.author.href }}">{{ params.author.name }}</a>
+    </li>
+    <li>
+      {% lucide "glasses", {"size": "20"} %}
+      {{ params.content | readingtime }}
+    </li>
+  </ul>
+{% endmacro %}