refactor(shop_category): migrate admin module to Domain+DI with routing and ajax cleanup

admin/templates/shop-product/product-edit.php

@@ -511,7 +511,7 @@ ob_start();
                     </div>
                     <?=
                     \Tpl::view('shop-product/subcategories-list', [
-                      'categories' => \admin\factory\ShopCategory::subcategories($category['id']),
+                      'categories' => ( new \Domain\Category\CategoryRepository( $GLOBALS['mdb'] ) )->subcategories($category['id']),
                       'product_categories' => $this->product['categories'],
                       'dlang' => $this->dlang
                     ]);