Add possibility to set custom properties to cart item

src/CartManager/AbstractCart.php

@@ -158,6 +158,10 @@ public function updateItem(string $itemKey, CheckoutableInterface $product, int
             $item->setSubItems($subItems);
         }
 
+        if (!empty($params)) {
+            $item->setCustomProperties($params);
+        }
+
         $this->items[$itemKey] = $item;
 
         // trigger cart has been modified

src/CartManager/AbstractCartItem.php

@@ -298,4 +298,20 @@ public function setIsLoading(bool $isLoading): void
     {
         $this->isLoading = $isLoading;
     }
+
+    /**
+     * Sets custom properties to CartItem when provided in AbstractCart::addItem
+     *
+     * @param array $params
+     * @return void
+     */
+    public function setCustomProperties(array $params): void
+    {
+        foreach ($params as $key => $value) {
+            $method = 'set' . ucfirst($key);
+            if (method_exists($this, $method)) {
+                $this->{$method}($value);
+            }
+        }
+    }
 }

src/CartManager/CartItemInterface.php

@@ -112,4 +112,6 @@ public function setAddedDateTimestamp(int $time): void;
      * @return string
      */
     public function getName(): string;
+
+    public function setCustomProperties(array $params): void;
 }