Add initial support for 2021.12.14

src/Impostor.Api/Net/Messages/C2S/HandshakeC2S.cs

@@ -35,6 +35,11 @@ namespace Impostor.Api.Net.Messages.C2S
             {
                 platformSpecificData = null;
             }
+
+            if (clientVersion >= Version.V4)
+            {
+                reader.ReadByte(); // purpose unknown, seems hardcoded to 0
+            }
         }
 
         private static class Version
@@ -44,6 +49,8 @@ namespace Impostor.Api.Net.Messages.C2S
             public static readonly int V2 = GameVersion.GetVersion(2021, 6, 30);
 
             public static readonly int V3 = GameVersion.GetVersion(2021, 11, 9);
+
+            public static readonly int V4 = GameVersion.GetVersion(2021, 12, 14);
         }
     }
 }

src/Impostor.Server/Net/Manager/ClientManager.cs

@@ -23,6 +23,7 @@ namespace Impostor.Server.Net.Manager
         private static readonly int[] SupportedVersions =
         {
             GameVersion.GetVersion(2021, 11, 9), // 2021.11.9
+            GameVersion.GetVersion(2021, 12, 14), // 2021.12.14
         };
 
         private readonly ILogger<ClientManager> _logger;