Handle other error cases

[nqthqn]

First of all, just want to say, i love your plugin. Thanks for making it :) 💯

If you have two tests name the same thing you get this in the shell, The tests 'Utility Smoke Tests' contain multiple tests named 'listToMaybeName'. Let's rename them so we know which is which. But I do not see where it's surfaced in the UI. In fact it indicates "failed" which is not entirely correct.

Also, the compiler errors don't seem to be visible. Sometimes I forget to add a package to my tests app elm-package.json. It would be nice if that was surfaced in the UI.

Thanks again!