refactor(main.ts): ♻️ 抽离一些功能为vue插件

src/plugins/icons.ts

@@ -0,0 +1,9 @@
+import type { App } from "vue";
+import * as ElementPlusIconsVue from "@element-plus/icons-vue";
+
+// 注册所有图标
+export function setupElIcons(app: App<Element>) {
+  for (const [key, component] of Object.entries(ElementPlusIconsVue)) {
+    app.component(key, component);
+  }
+}