chore: 添加缺失的静态资源文件

添加多个前端界面所需的图片、字体、音频等静态资源文件，包括：
- 管理员后台的图标、背景图、组件图片
- 移动端页面的商品图片、用户中心图片、活动图标
- 第三方库的示例图片和字体文件
- 浏览器兼容性配置文件
- 图标字体文件（eot、ttf、woff、woff2格式）

这些资源是前端界面正常显示所必需的，之前可能因版本控制忽略或遗漏而缺失。

vendor/symfony/translation/Loader/ArrayLoader.php

@@ -0,0 +1,58 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Translation\Loader;
+
+use Symfony\Component\Translation\MessageCatalogue;
+
+/**
+ * ArrayLoader loads translations from a PHP array.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ArrayLoader implements LoaderInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function load(mixed $resource, string $locale, string $domain = 'messages'): MessageCatalogue
+    {
+        $resource = $this->flatten($resource);
+        $catalogue = new MessageCatalogue($locale);
+        $catalogue->add($resource, $domain);
+
+        return $catalogue;
+    }
+
+    /**
+     * Flattens an nested array of translations.
+     *
+     * The scheme used is:
+     *   'key' => ['key2' => ['key3' => 'value']]
+     * Becomes:
+     *   'key.key2.key3' => 'value'
+     */
+    private function flatten(array $messages): array
+    {
+        $result = [];
+        foreach ($messages as $key => $value) {
+            if (\is_array($value)) {
+                foreach ($this->flatten($value) as $k => $v) {
+                    $result[$key.'.'.$k] = $v;
+                }
+            } else {
+                $result[$key] = $value;
+            }
+        }
+
+        return $result;
+    }
+}