feat(11ty): add page layout

11ty/_includes/layouts/index.njk

@@ -0,0 +1,19 @@
+{% extends 'layouts/base.njk' %}
+
+{% block content %}
+  <main>
+    {{ content | safe }}
+    {% include 'components/table-of-content.njk' %}
+    <section>
+      <h2>Words</h2>
+      {% include 'components/defintions-list.njk' %}
+    </section>
+  </main>
+  <footer class="site-footer">
+    <nav aria-label="">
+      <ul class="navigation-list">
+        <li><a href="/documentation/">Documentation
+      </ul>
+    </nav>
+  </footer>
+{% endblock %}