Add supporting themes required for Lotusdocs

themes/hugo-mod-jslibs-dist/popperjs/package/lib/utils/within.js.flow

@@ -0,0 +1,11 @@
+// @flow
+import { max as mathMax, min as mathMin } from './math';
+
+export function within(min: number, value: number, max: number): number {
+  return mathMax(min, mathMin(value, max));
+}
+
+export function withinMaxClamp(min: number, value: number, max: number) {
+  const v = within(min, value, max);
+  return v > max ? max : v;
+}