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/upgrade/AssetsRemoverTrait.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace InPost\Izi\Upgrade;
+
+require_once __DIR__ . '/FileRemoverTrait.php';
+
+trait AssetsRemoverTrait
+{
+    use FileRemoverTrait;
+
+    private function removeStaleAssets(array $paths): bool
+    {
+        return $this->removeFiles(array_map(static function (string $path): string {
+            return 'views/' . $path;
+        }, $paths));
+    }
+}