Print a message if a newer version is available

[beardgans]

Hi everyone!
Thank you for this awesome project!

I found this feature in the GitHub CLI application and npm.

I think it'll be useful for users who install rome/tools using the installation script or npm.
And this will let them know that a new version is available and it's time to update.

Ready-made crates to implement that:

• https://github.com/mgrachev/update-informer
• https://github.com/tarikeshaq/update-notifier

[ematipico]

This is something that we will probably do once Rome will start being released in the latest tag on npm. At the moment we use the next tag, so it doesn't make much sense to have it.

[Conaclos]

I am not found of this kind of feature. This requires a network request.