game dir setup

known bugs are a missing prod.keys popup after setup (how), as well as the dialog for autoload kinda cluttering up the screen after you hit next on the game dir page

src/Ryujinx/UI/SetupWizard/Pages/GameDirs/SetupGameDirsPageContext.cs

@@ -0,0 +1,73 @@
+using Avalonia.Controls;
+using Avalonia.Layout;
+using CommunityToolkit.Mvvm.ComponentModel;
+using System.Collections.ObjectModel;
+using Gommon;
+using Ryujinx.Ava;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.Systems.Configuration;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Ava.UI.SetupWizard;
+using Ryujinx.Common;
+using System;
+using System.Linq;
+
+namespace Ryujinx.UI.SetupWizard.Pages
+{
+    public partial class SetupGameDirsPageContext() : SetupWizardPageContext(LocaleKeys.SetupWizardGameDirsPageTitle)
+    {
+        [ObservableProperty] 
+        public partial ObservableCollection<string> GameDirs { get; set; } 
+            = new(ConfigurationState.Instance.UI.GameDirs);
+        [ObservableProperty] 
+        public partial ObservableCollection<string> UpdateAndDlcDirs { get; set; } 
+            = new(ConfigurationState.Instance.UI.AutoloadDirs);
+
+        public override Result CompleteStep()
+        {
+            if (GameDirs.Count is 0)
+            {
+                NotificationManager.Error("At least one folder for games must be selected; otherwise the UI will be empty.");
+                return Result.Failure(RetryError.Shared);
+            }
+
+            ConfigurationState.Instance.UI.GameDirs.Value = GameDirs.ToList();
+            ConfigurationState.Instance.UI.AutoloadDirs.Value = UpdateAndDlcDirs.ToList();
+            OwningWizard.SignalConfigModified();
+            RyujinxApp.MainWindow.LoadApplications();
+
+            return Result.Success;
+        }
+
+        public override object CreateHelpContent()
+        {
+            Grid grid = new()
+            {
+                RowDefinitions = [new(GridLength.Auto), new(GridLength.Auto)],
+                HorizontalAlignment = HorizontalAlignment.Center
+            };
+
+            grid.Children.Add(new TextBlock
+            {
+                Text = "Not sure how to get your games, updates, and/or DLC onto your PC?",
+                HorizontalAlignment = HorizontalAlignment.Center,
+                GridRow = 0
+            });
+
+            grid.Children.Add(new HyperlinkButton
+            {
+                Content = "Click here to view a guide.",
+                HorizontalAlignment = HorizontalAlignment.Center,
+                NavigateUri = new Uri(SharedConstants.DumpFirmwareWikiUrl),
+                GridRow = 1
+            });
+
+            return grid;
+        }
+    }
+
+    public struct RetryError : IErrorState
+    {
+        public static readonly RetryError Shared = new();
+    }
+}