Restore logging of openmw.cfg paths in launcher

Removed here https://gitlab.com/OpenMW/openmw/-/merge_requests/2650/diffs#be09c16519a3f26f4306b920c50e0e4215dffaee_329_328

apps/launcher/maindialog.cpp

@@ -351,6 +351,7 @@ bool Launcher::MainDialog::setupGameSettings()
 
     for (const auto& path : Files::getActiveConfigPathsQString(mCfgMgr))
     {
+        Log(Debug::Verbose) << "Loading config file: " << path.toUtf8().constData();
         if (!loadFile(path, &Config::GameSettings::readFile))
             return false;
     }