feat: publicize doc implemetation

one/docs/demo/label/default.vue

@@ -0,0 +1,55 @@
+<template>
+<article>
+  <section>
+    <h4>Inline with Select</h4>
+    <veui-label>
+      Click me:
+      <veui-select
+        :options="protocols"
+        style="width: 100px"
+      />
+    </veui-label>
+  </section>
+  <section>
+    <h4><code>for</code> + <code>ref</code> with Input</h4>
+    <veui-label for="origin">
+      Click me:
+    </veui-label>
+    <veui-input
+      ref="origin"
+      style="width: 200px"
+    />
+  </section>
+</article>
+</template>
+
+<script>
+import { Label, Select, Input } from 'veui'
+
+export default {
+  name: 'text-input',
+  components: {
+    'veui-label': Label,
+    'veui-select': Select,
+    'veui-input': Input
+  },
+  data () {
+    return {
+      protocols: [
+        { label: 'https://', value: 'https' },
+        { label: 'http://', value: 'http' }
+      ]
+    }
+  }
+}
+</script>
+
+<style lang="less" scoped docs>
+section {
+  margin-bottom: 20px;
+}
+
+h4 {
+  margin-top: 0;
+}
+</style>