Add app update debug messages

app/src/updaters/appupdater.cpp

@@ -26,6 +26,8 @@ bool AppUpdater::isRunning()
 
 void AppUpdater::doUpdateLookUp()
 {
+    qDebug() << "Looking for updates of " << appImagePath;
+
     if (appImagePath.isEmpty()) {
         qWarning() << "Self-updates disabled: No app file provided.";
         return;
@@ -53,6 +55,7 @@ void AppUpdater::doUpdateLookUp()
 
 void AppUpdater::doUpdate()
 {
+    qDebug() << "Updating " << appImagePath;
     if (appImagePath.isEmpty()) {
         qWarning() << "Self-updates disabled: No app file provided.";
         return;