✨(checkbox): 新增 size 属性

package/document-component/src/document/zh-CN/components/checkbox.md

@@ -126,6 +126,37 @@ export default {
 
 :::
 
+::: title 不同尺寸
+:::
+
+::: demo
+
+<template>
+    <lay-checkbox name="like" skin="primary" size="lg" v-model="checked3" value="1">写作</lay-checkbox>
+    <lay-checkbox name="like" skin="primary" size="md" v-model="checked4" value="2">画画</lay-checkbox>
+    <lay-checkbox name="like" skin="primary" size="sm" v-model="checked5" value="3">运动</lay-checkbox>
+    <lay-checkbox name="like" skin="primary" size="xs" v-model="checked5" value="4">游泳</lay-checkbox>
+</template>
+
+<script>
+import { ref } from 'vue'
+
+export default {
+  setup() {
+
+    const checked3 = ref(true);
+    const checked4 = ref(true);
+    const checked5 = ref(true);
+
+    return {
+        checked3, checked4, checked5
+    }
+  }
+}
+</script>
+
+:::
+
 ::: title 禁用状态
 :::