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/repay/icon2.svg

@@ -0,0 +1,3 @@
+<svg width="18" height="18" viewBox="0 0 18 18" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M1.5 7.12491C1.50002 6.29031 1.7532 5.47535 2.2261 4.78766C2.699 4.09997 3.36939 3.5719 4.14871 3.27321C4.92803 2.97451 5.77962 2.91924 6.59101 3.11469C7.4024 3.31014 8.13542 3.74712 8.69325 4.36791C8.73254 4.40992 8.78004 4.44341 8.83281 4.46631C8.88557 4.48921 8.94248 4.50102 9 4.50102C9.05752 4.50102 9.11443 4.48921 9.16719 4.46631C9.21996 4.44341 9.26746 4.40992 9.30675 4.36791C9.86283 3.74308 10.596 3.30243 11.4087 3.10461C12.2214 2.90678 13.0751 2.96117 13.8562 3.26052C14.6372 3.55987 15.3085 4.09 15.7808 4.78033C16.2531 5.47067 16.504 6.28848 16.5 7.12491C16.5 8.84241 15.375 10.1249 14.25 11.2499L10.131 15.2347C9.99125 15.3952 9.81895 15.5241 9.62553 15.6129C9.43212 15.7017 9.22203 15.7483 9.00922 15.7496C8.7964 15.751 8.58574 15.707 8.39122 15.6207C8.19669 15.5344 8.02277 15.4076 7.881 15.2489L3.75 11.2499C2.625 10.1249 1.5 8.84991 1.5 7.12491Z" stroke="#9CA1AF" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>