Add supporting themes required for Lotusdocs

themes/hugo-mod-jslibs-dist/popperjs/package/dist/esm/dom-utils/getWindowScroll.js

@@ -0,0 +1,10 @@
+import getWindow from "./getWindow.js";
+export default function getWindowScroll(node) {
+  var win = getWindow(node);
+  var scrollLeft = win.pageXOffset;
+  var scrollTop = win.pageYOffset;
+  return {
+    scrollLeft: scrollLeft,
+    scrollTop: scrollTop
+  };
+}