[GUI] Improve multi-monitor & highDpi support

- The Export Options window has been reorganized
- Improved multi-monitor support (.net builds)
- Disabled dpi awareness for net472 build, via app.manifest, for better compatibility (with Wine as well)

AssetStudioGUI/Program.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
+using System;
 using System.Windows.Forms;
 
 namespace AssetStudioGUI
@@ -15,7 +12,7 @@ namespace AssetStudioGUI
         static void Main()
         {
 #if !NETFRAMEWORK
-            Application.SetHighDpiMode(HighDpiMode.SystemAware);
+            Application.SetHighDpiMode(HighDpiMode.PerMonitorV2);
 #endif
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);