feat: publicize doc implemetation

one/docs/demo/tooltip/style.vue

@@ -0,0 +1,45 @@
+<template>
+<article>
+  <section>
+    <veui-checkbox
+      v-model="ui"
+      true-value="reverse"
+      :false-value="null"
+      ui="s"
+    >
+      Reverse style
+    </veui-checkbox>
+  </section>
+  <section>
+    <span ref="text">Move your mouse pointer over here.</span>
+    <veui-tooltip
+      target="text"
+      :ui="ui"
+    >
+      This is a tooltip.
+    </veui-tooltip>
+  </section>
+</article>
+</template>
+
+<script>
+import { Tooltip, Checkbox } from 'veui'
+
+export default {
+  components: {
+    'veui-tooltip': Tooltip,
+    'veui-checkbox': Checkbox
+  },
+  data () {
+    return {
+      ui: null
+    }
+  }
+}
+</script>
+
+<style lang="less" scoped docs>
+section + section {
+  margin-top: 20px;
+}
+</style>