Arch plugin: print usages of disallowed namespace/class

[bram-pkg]

When using a test like the following:

arch('does not use http in domains', function () {
    expect('Illuminate\Http')
        ->not->toBeUsedIn('App\Domains');
});

It would be nice if Pest could print where the usages are that it found to be faulty. Currently it can be quite hard to figure out.