refactor: 悬浮按钮组件化

src/cpns/ClipFloatBtn.vue

@@ -0,0 +1,18 @@
+<template>
+  <div class="clip-float-btn">
+    <div @click="restoreDataBase">🧭</div>
+  </div>
+</template>
+
+<script setup>
+// const emit = defineEmits(['onBtnClick'])
+// const handleBtnClick = () => emit('onBtnClick')
+const restoreDataBase = () => {
+  // 清空数据库
+  const flag = window.confirm('确定要清空剪贴板记录吗?')
+  if (flag) {
+    window.db.emptyDataBase()
+    updateShowList('all')
+  }
+}
+</script>