misc: Switch ProcessResult to a class (#4846)

This avoid giant copies being performed when being returned or passed.

src/Ryujinx.HLE/Loaders/Processes/ProcessResult.cs

@@ -9,7 +9,7 @@ using System.Linq;
 
 namespace Ryujinx.HLE.Loaders.Processes
 {
-    public struct ProcessResult
+    public class ProcessResult
     {
         public static ProcessResult Failed => new(null, new ApplicationControlProperty(), false, false, null, 0, 0, 0, TitleLanguage.AmericanEnglish);