Notify users about new versions in CLI

— Feature Card

Description

It would be nice to notify the users of the framework about new versions of the different Frontity packages.

User Stories

As a Frontity developer
I want to see if there is a new version of a package while developing
so that I can update my packages often

Possible solution

jamesgeorge007 suggested to use something like the update-notifier package in this issue.