Added langauge code packet (0x6) and 0x2/0x7 temp packets to clean up the login packets sent by client.

FFXIVClassic Map Server/packets/receive/LangaugeCodePacket.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FFXIVClassic_Map_Server.packets.receive
+{
+    class LangaugeCodePacket
+    {
+        public bool invalidPacket = false;
+        public uint languageCode;
+
+        public LangaugeCodePacket(byte[] data)
+        {
+            using (MemoryStream mem = new MemoryStream(data))
+            {
+                using (BinaryReader binReader = new BinaryReader(mem))
+                {
+                    try{
+                        binReader.ReadUInt32();
+                        languageCode = binReader.ReadUInt32();
+                    }
+                    catch (Exception){
+                        invalidPacket = true;
+                    }
+                }
+            }
+        }
+    }
+}