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/mime/Header/IdentificationHeader.php

@@ -0,0 +1,107 @@
+<?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\Mime\Header;
+
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Mime\Exception\RfcComplianceException;
+
+/**
+ * An ID MIME Header for something like Message-ID or Content-ID (one or more addresses).
+ *
+ * @author Chris Corbyn
+ */
+final class IdentificationHeader extends AbstractHeader
+{
+    private array $ids = [];
+    private array $idsAsAddresses = [];
+
+    public function __construct(string $name, string|array $ids)
+    {
+        parent::__construct($name);
+
+        $this->setId($ids);
+    }
+
+    /**
+     * @param string|string[] $body a string ID or an array of IDs
+     *
+     * @throws RfcComplianceException
+     */
+    public function setBody(mixed $body)
+    {
+        $this->setId($body);
+    }
+
+    public function getBody(): array
+    {
+        return $this->getIds();
+    }
+
+    /**
+     * Set the ID used in the value of this header.
+     *
+     * @param string|string[] $id
+     *
+     * @throws RfcComplianceException
+     */
+    public function setId(string|array $id)
+    {
+        $this->setIds(\is_array($id) ? $id : [$id]);
+    }
+
+    /**
+     * Get the ID used in the value of this Header.
+     *
+     * If multiple IDs are set only the first is returned.
+     */
+    public function getId(): ?string
+    {
+        return $this->ids[0] ?? null;
+    }
+
+    /**
+     * Set a collection of IDs to use in the value of this Header.
+     *
+     * @param string[] $ids
+     *
+     * @throws RfcComplianceException
+     */
+    public function setIds(array $ids)
+    {
+        $this->ids = [];
+        $this->idsAsAddresses = [];
+        foreach ($ids as $id) {
+            $this->idsAsAddresses[] = new Address($id);
+            $this->ids[] = $id;
+        }
+    }
+
+    /**
+     * Get the list of IDs used in this Header.
+     *
+     * @return string[]
+     */
+    public function getIds(): array
+    {
+        return $this->ids;
+    }
+
+    public function getBodyAsString(): string
+    {
+        $addrs = [];
+        foreach ($this->idsAsAddresses as $address) {
+            $addrs[] = '<'.$address->toString().'>';
+        }
+
+        return implode(' ', $addrs);
+    }
+}