refactor: ♻️ 导航栏组件代码重构优化

src/components/Fullscreen/index.vue

@@ -0,0 +1,11 @@
+<template>
+  <div @click="toggle">
+    <svg-icon :icon-class="isFullscreen ? 'fullscreen-exit' : 'fullscreen'" />
+  </div>
+</template>
+
+<script setup lang="ts">
+const { isFullscreen, toggle } = useFullscreen();
+</script>
+
+<style lang="scss" scoped></style>