create a URL shortener service where you can write a long URL into an input field and the service shortens the URL
User Story: I can pass a URL as a parameter and I will receive a shortened URL in the JSON response.
User Story: If I pass an invalid URL that doesn't follow the valid http://www.example.com format, the JSON response will contain an error instead.
User Story: When I visit that shortened URL, it will redirect me to my original link.