feat: publicize doc implemetation

one/docs/demo/date-picker/shortcuts.vue

@@ -0,0 +1,62 @@
+<template>
+<article>
+  <veui-date-picker
+    v-model="range"
+    :shortcuts="shortcuts"
+    range
+    clearable
+  />
+</article>
+</template>
+
+<script>
+import { DatePicker } from 'veui'
+
+export default {
+  components: {
+    'veui-date-picker': DatePicker
+  },
+  data () {
+    return {
+      range: null,
+      shortcuts: [
+        {
+          label: '上个月',
+          from: {
+            startOf: 'month',
+            month: -1
+          },
+          to: {
+            startOf: 'month',
+            days: -1
+          }
+        },
+        {
+          label: '本月',
+          from: {
+            startOf: 'month'
+          },
+          to: 0
+        },
+        {
+          label: '本周',
+          from: {
+            startOf: 'week',
+            days: 0
+          },
+          to: 0
+        },
+        {
+          label: '最近7天',
+          from: -6,
+          to: 0
+        },
+        {
+          label: '今天',
+          to: 0
+        }
+      ]
+    }
+  }
+}
+</script>