perf: 将本地图标全部按需引入，首屏加载减少 61 个图标资源，首屏加载再次变快 (#389)

* perf: 优化图标，将本地图标按需引入，首屏加载减少 `61` 个图标资源，首屏加载再次变快

src/layout/components/panel/index.vue

@@ -2,6 +2,7 @@
 import { ref } from "vue";
 import { onClickOutside } from "@vueuse/core";
 import { emitter } from "@/utils/mitt";
+import Close from "@iconify-icons/ep/close";
 
 const show = ref<Boolean>(false);
 const target = ref(null);
@@ -25,7 +26,7 @@ emitter.on("openPanel", () => {
           <span title="关闭配置">
             <IconifyIconOffline
               class="dark:text-white"
-              icon="close"
+              :icon="Close"
               @click="show = !show"
             />
           </span>