add array helper exercise

Sascha Schulz

2023-06-20 b16e5cf3df81a046ac0114c528ea46ef693ff0fd

 package-lock.json

@@ -7,6 +7,7 @@
    "": {
      "name": "web-development-examples",
      "version": "1.0.0",
      "hasInstallScript": true,
      "license": "ISC",
      "dependencies": {
        "copyfiles": "^2.4.1",