Feature - Expire View Count

[0APOCALYPSE0]

I think we should have the feature of expiring view count. So the shortened URL should expire after expiring view count limit.
This feature should be optional so if the user does not provide a view count then in that case URL will not expire but if the user provides any value greater than 0 then the URL should expire after that number of views.

I have raised a PR for this feature. Please review and approve. If there are any suggestions please let me know.

Thanks