feat: 添加Font Awesome字体图标及相关样式文件

新增Font Awesome的字体文件、SVG图标及LESS/SCSS样式文件，包括基础样式、图标定义和响应式布局支持。添加了多种常用图标如播放、停止、加减乘除等，并支持列表布局和屏幕阅读器优化。

less/_bordered-pulled.less

@@ -0,0 +1,20 @@
+// bordered + pulled icons
+// -------------------------
+
+.@{fa-css-prefix}-border {
+  border-color: ~'var(--@{fa-css-prefix}-border-color, @{fa-border-color})';
+  border-radius: ~'var(--@{fa-css-prefix}-border-radius, @{fa-border-radius})';
+  border-style: ~'var(--@{fa-css-prefix}-border-style, @{fa-border-style})';
+  border-width: ~'var(--@{fa-css-prefix}-border-width, @{fa-border-width})';
+  padding: ~'var(--@{fa-css-prefix}-border-padding, @{fa-border-padding})';
+}
+
+.@{fa-css-prefix}-pull-left { 
+  float: left;
+  margin-right: ~'var(--@{fa-css-prefix}-pull-margin, @{fa-pull-margin})'; 
+}
+
+.@{fa-css-prefix}-pull-right { 
+  float: right;
+  margin-left: ~'var(--@{fa-css-prefix}-pull-margin, @{fa-pull-margin})'; 
+}