提交初始版本，使用vant ui库

miniprogram_npm/@vant/weapp/share-sheet/options.wxs

@@ -0,0 +1,14 @@
+/* eslint-disable */
+var PRESET_ICONS = ['qq', 'link', 'weibo', 'wechat', 'poster', 'qrcode', 'weapp-qrcode', 'wechat-moments'];
+
+function getIconURL(icon) {
+  if (PRESET_ICONS.indexOf(icon) !== -1) {
+    return 'https://img.yzcdn.cn/vant/share-sheet-' + icon + '.png';
+  }
+
+  return icon;
+}
+
+module.exports = {
+  getIconURL: getIconURL,
+};