Use gdiScaling for HighDPI on windows

Author: iakov

qrgui/mainWindow/application.exe.manifest

@@ -30,6 +30,7 @@
   <application xmlns="urn:schemas-microsoft-com:asm.v3">
     <windowsSettings>
       <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true</dpiAware>
+      <gdiScaling xmlns="http://schemas.microsoft.com/SMI/2017/WindowsSettings">true</gdiScaling>	
     </windowsSettings>
   </application>