Add supporting themes required for Lotusdocs

themes/hugo-mod-jslibs-dist/popperjs/package/lib/dom-utils/isScrollParent.js

@@ -0,0 +1,10 @@
+import getComputedStyle from "./getComputedStyle.js";
+export default function isScrollParent(element) {
+  // Firefox wants us to check `-x` and `-y` variations as well
+  var _getComputedStyle = getComputedStyle(element),
+      overflow = _getComputedStyle.overflow,
+      overflowX = _getComputedStyle.overflowX,
+      overflowY = _getComputedStyle.overflowY;
+
+  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+}