Right now, as soon as a developer installs a package as a local package, it loses the ability to update that package. We can add an
update-package command to solve that.
As a Frontity developer
I want to update a local package
so that I can merge the latest changes with my own.
We can check for git first, then check if everything is committed and finally do the update. That way users can review the changes and do a proper merge. It could also ask the user for the name of a new branch.