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/phpoffice/phpspreadsheet/phpstan.neon.dist

@@ -0,0 +1,27 @@
+includes:
+    - phpstan-baseline.neon
+    - phpstan-conditional.php
+    - vendor/phpstan/phpstan-phpunit/extension.neon
+    - vendor/phpstan/phpstan-phpunit/rules.neon
+
+parameters:
+    level: 8
+    paths:
+        - src/
+        - tests/
+    excludePaths:
+        - src/PhpSpreadsheet/Chart/Renderer/JpGraph.php
+        - src/PhpSpreadsheet/Chart/Renderer/JpGraphRendererBase.php
+        - src/PhpSpreadsheet/Collection/Memory/SimpleCache1.php
+        - src/PhpSpreadsheet/Collection/Memory/SimpleCache3.php
+        - src/PhpSpreadsheet/Writer/ZipStream2.php
+        - src/PhpSpreadsheet/Writer/ZipStream3.php
+    parallel:
+        processTimeout: 300.0
+    checkMissingIterableValueType: false
+    ignoreErrors:
+        - '~^Parameter \#1 \$im(age)? of function (imagedestroy|imageistruecolor|imagealphablending|imagesavealpha|imagecolortransparent|imagecolorsforindex|imagesavealpha|imagesx|imagesy|imagepng) expects (GdImage|resource), GdImage\|resource given\.$~'
+        - '~^Parameter \#2 \$src_im(age)? of function imagecopy expects (GdImage|resource), GdImage\|resource given\.$~'
+        # Accept a bit anything for assert methods
+        - '~^Parameter \#2 .* of static method PHPUnit\\Framework\\Assert\:\:assert\w+\(\) expects .*, .* given\.$~'
+        - '~^Method PhpOffice\\PhpSpreadsheetTests\\.*\:\:test.*\(\) has parameter \$args with no type specified\.$~'