apidash_core: contents moved into better_networking package

packages/better_networking/lib/utils/string_utils.dart

@@ -0,0 +1,19 @@
+import 'dart:math';
+
+class RandomStringGenerator {
+  static const _chars =
+      'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1234567890';
+  static Random rnd = Random();
+
+  static String getRandomString(int length) =>
+      String.fromCharCodes(Iterable.generate(
+          length, (_) => _chars.codeUnitAt(rnd.nextInt(_chars.length))));
+
+  static String getRandomStringLines(int lines, int length) {
+    List<String> result = [];
+    for (var i = 0; i < lines; i++) {
+      result.add(getRandomString(length));
+    }
+    return result.join('\n');
+  }
+}