[IntelliSense] Show which class is winning when there is a conflict

[skttl]

When I have two classes conflicting, in would be good to know which one wins.

In this example, the div would be display:flex, so if there could be some kind of message saying that, that would be nice!

Especially when you are cleaning up old code from a developer who doesn't have linting, and you just want to remove the classes being disregarded.