[ES6] Use Youtube Api，實作 youtube 影音

<div class="video">
  <div id="video_Player"></div>
</div>

<!-- 下方這串最後被我移除，實作在Creative_video.js -->
<script>
  /* This code loads the IFrame Player API code asynchronously. */
  var tag = document.createElement('script');
  tag.src = "https://www.youtube.com/iframe_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
</script>