Move to custom SSG instead of eleventy.

docs/renderer/nodes/SearchBox.njk

@@ -0,0 +1,8 @@
+{% from "./Node.njk" import Node %}
+
+{% macro render(node) %}
+  <div class="flex gap-4 px-4 py-2 rounded-md border-2 border-neutral-50/75 focus-within:border-primary-400 focus-within:text-primary-400 bg-transparent text-neutral-50 {{ node.class }}">
+    <input type="text" placeholder="Search" class="w-full bg-transparent outline-none"/>
+    {{ Node('Icon', { icon: 'search' }) }}
+  </div>
+{% endmacro %}