feat: vite-plugin-svg-icons引入

1. vite-plugin-svg-icons引入
2. vite.config.ts读取环境变量
3. vite配置跨域

package.json

@@ -9,7 +9,6 @@
   "dependencies": {
     "axios": "^0.24.0",
     "element-plus": "^1.2.0-beta.3",
-    "fs": "0.0.1-security",
     "path-to-regexp": "^6.2.0",
     "screenfull": "^6.0.0",
     "vue": "^3.2.16",
@@ -21,9 +20,9 @@
     "@types/nprogress": "^0.2.0",
     "@vitejs/plugin-vue": "^1.9.3",
     "sass": "^1.43.4",
-    "svg-sprite-loader": "^6.0.11",
     "typescript": "^4.4.3",
     "vite": "^2.6.4",
+    "vite-plugin-svg-icons": "^1.0.5",
     "vue-tsc": "^0.3.0"
   }
 }