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/solid.less

@@ -0,0 +1,26 @@
+/*!
+ * Font Awesome Free 6.4.0 by @fontawesome - https://fontawesome.com
+ * License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
+ * Copyright 2023 Fonticons, Inc.
+ */
+@import "_variables.less";
+
+:root, :host {
+  --@{fa-css-prefix}-style-family-classic: '@{fa-style-family}';
+  --@{fa-css-prefix}-font-solid: normal 900 1em/1 '@{fa-style-family}';
+}
+
+@font-face {
+  font-family: 'Font Awesome 6 Free';
+  font-style: normal;
+  font-weight: 900;
+  font-display: @fa-font-display;
+  src: url('@{fa-font-path}/fa-solid-900.woff2') format('woff2'),
+    url('@{fa-font-path}/fa-solid-900.ttf') format('truetype');
+}
+
+
+.fas,
+.@{fa-css-prefix}-solid {
+  font-weight: 900;
+}