Adds DepotDownloaderAuthenticator.cs to handle hooks on SteamKit2 new Auth

DepotDownloader/DepotDownloaderAuthenticator.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Threading.Tasks;
+using SteamKit2.Authentication;
+
+namespace DepotDownloader;
+
+public class DepotDownloaderAuthenticator : IAuthenticator
+{
+    public Task<string> GetDeviceCodeAsync(bool previousCodeWasIncorrect)
+    {
+        if (previousCodeWasIncorrect)
+        {
+            Console.Out.WriteLine("[2FA]|[Wrong]|The previous 2-factor auth code you have provided is incorrect.");
+        }
+
+        string? code;
+
+        do
+        {
+            Console.Out.Write("[2FA]|Please enter your 2 factor auth code from your authenticator app: ");
+            code = Console.ReadLine()?.Trim();
+
+            if (code == null)
+            {
+                break;
+            }
+        } while (string.IsNullOrEmpty(code));
+
+        return Task.FromResult(code!);
+    }
+
+    public Task<string> GetEmailCodeAsync(string email, bool previousCodeWasIncorrect)
+    {
+        if (previousCodeWasIncorrect)
+        {
+            Console.Out.WriteLine("[Guard]|[Wrong]|The previous 2-factor auth code you have provided is incorrect.");
+        }
+
+        string? code;
+
+        do
+        {
+            Console.Out.Write($"[Guard]|Please enter the authentication code sent to your email address: ");
+            code = Console.ReadLine()?.Trim();
+
+            if (code == null)
+            {
+                break;
+            }
+        } while (string.IsNullOrEmpty(code));
+
+        return Task.FromResult(code!);
+    }
+
+    public Task<bool> AcceptDeviceConfirmationAsync()
+    {
+        Console.Out.WriteLine("[MobileApp]|Use the Steam Mobile App to confirm your sign in...");
+        return Task.FromResult(true);
+    }
+}

DepotDownloader/Steam3Session.cs

@@ -513,7 +513,7 @@ namespace DepotDownloader
                                 Username = logonDetails.Username,
                                 Password = logonDetails.Password,
                                 IsPersistentSession = ContentDownloader.Config.RememberPassword,
-                                Authenticator = new UserConsoleAuthenticator(),
+                                Authenticator = new DepotDownloaderAuthenticator(),
                             });
                         }
                         catch (TaskCanceledException)