优化自定义图标功能，修复上线后无法展示自定义图标的问题。 (#1625)

* 修改自定义图标使用方式

* 优化自定义icon功能

web/vite.config.js

@@ -11,6 +11,7 @@ import vuePlugin from '@vitejs/plugin-vue'
 import GvaPosition from './vitePlugin/gvaPosition'
 import GvaPositionServer from './vitePlugin/codeServer'
 import fullImportPlugin from './vitePlugin/fullImport/fullImport.js'
+import { svgBuilder } from './vitePlugin/svgIcon/svgIcon.js'
 // @see https://cn.vitejs.dev/config/
 export default ({
   command,
@@ -87,6 +88,7 @@ export default ({
         targets: ['Android > 39', 'Chrome >= 60', 'Safari >= 10.1', 'iOS >= 10.3', 'Firefox >= 54', 'Edge >= 15'],
       }),
       vuePlugin(),
+      svgBuilder('./src/assets/icons/'),
       [Banner(`\n Build based on gin-vue-admin \n Time : ${timestamp}`)]
     ],
     css: {