GameServer + packet types, we aren't parsing yet

AscNet.GameServer/Packet.cs

@@ -0,0 +1,76 @@
+using MessagePack;
+
+namespace AscNet.GameServer
+{
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
+    [MessagePackObject(false)]
+    public class Packet
+    {
+        [Key(0)]
+        public int No;
+
+        [Key(1)]
+        public ContentType Type;
+
+        [Key(2)]
+        public byte[] Content;
+
+        public enum ContentType
+        {
+            Request,
+            Response,
+            Push,
+            Exception
+        }
+
+        [MessagePackObject(false)]
+        public class Request
+        {
+            [Key(0)]
+            public int Id;
+
+            [Key(1)]
+            public string Name;
+
+            [Key(2)]
+            public byte[] Content;
+        }
+
+        [MessagePackObject(false)]
+        public class Response
+        {
+            [Key(0)]
+            public int Id;
+
+            [Key(1)]
+            public string Name;
+
+            [Key(2)]
+            public byte[] Content;
+        }
+
+        [MessagePackObject(false)]
+        public class Push
+        {
+            [Key(0)]
+            public string Name;
+
+            [Key(1)]
+            public byte[] Content;
+        }
+
+        [MessagePackObject(false)]
+        public class Exception
+        {
+            [Key(0)]
+            public int Id;
+
+            [Key(1)]
+            public int Code;
+
+            [Key(2)]
+            public string Message;
+        }
+    }
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
+}