init: 初始化 AssetX 项目仓库

包含 webapp（Next.js 用户端）、webapp-back（Go 后端）、
antdesign（管理后台）、landingpage（营销落地页）、
数据库 SQL 和配置文件。

webapp/public/components/card/icon2.svg

@@ -0,0 +1,6 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M16 21V19C16 17.9391 15.5786 16.9217 14.8284 16.1716C14.0783 15.4214 13.0609 15 12 15H6C4.93913 15 3.92172 15.4214 3.17157 16.1716C2.42143 16.9217 2 17.9391 2 19V21" stroke="#9CA1AF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M9 11C11.2091 11 13 9.20914 13 7C13 4.79086 11.2091 3 9 3C6.79086 3 5 4.79086 5 7C5 9.20914 6.79086 11 9 11Z" stroke="#9CA1AF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M19 8V14" stroke="#9CA1AF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M22 11H16" stroke="#9CA1AF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>