fix: move original price styling to the Basket Control

Related: #179

src/QUI/ERP/Order/Controls/Basket/Basket.css

+:where(.quiqqer-order-basket-articles .offer-original-price) {
+    display: block;
+    font-size: 0.875rem;
+    text-decoration: line-through;
+}
\ No newline at end of file

src/QUI/ERP/Order/Controls/Basket/Basket.php

@@ -49,6 +49,8 @@ public function __construct(array $attributes = [])
 
         parent::__construct($attributes);
 
+        $this->addCSSFile(dirname(__FILE__) . '/Basket.css');
+
         $this->setAttributes([
             'data-qui' => 'package/quiqqer/order/bin/frontend/controls/basket/Basket'
         ]);

src/QUI/ERP/Order/Controls/OrderProcess/Basket.css

@@ -17,10 +17,3 @@
 .quiqqer-order-btn-submit:hover {
     background: #538018;
 }
-
-.offer-original-price {
-    clear: both;
-    display: block;
-    font-size: 80%;
-    text-decoration: line-through;
-}