Add debug log for received brightness

AdaptiveBrightness/monitor_win.cpp

@@ -92,6 +92,8 @@ float Monitor::getBrightness()
         return NAN;
     }
 
+    qDebug(ltr("Got brightness %1 in range [%2, %3]").arg(brightness).arg(minBrightness).arg(maxBrightness));
+
     m_brightnessRange = std::pair{minBrightness, maxBrightness};
     m_errorOccurred = false;