Add InPost Pay integration to admin templates

- Created a new template for the cart rule form with custom label, switch, and choice widgets.
- Implemented the InPost Pay block in the order details template for displaying delivery method, APM, and VAT invoice request.
- Added legacy support for the order details template to maintain compatibility with older PrestaShop versions.

modules/inpostizi/views/templates/admin/config/nav.html.twig

@@ -0,0 +1,12 @@
+
+<div id="head_tabs">
+  <ul class="nav nav-pills">
+    {% for id, item in nav_items %}
+      <li class="nav-item">
+        <a href="{{ item.url }}" id="{{ id }}" class="nav-link tab{% if item.active %} active current{% endif %}">
+          {{ item.label }}
+        </a>
+      </li>
+    {% endfor %}
+  </ul>
+</div>