codecs update

codec/packet/login/client/login_compression.go

@@ -0,0 +1,18 @@
+package client
+
+import "github.com/Tnze/go-mc/data/packetid"
+
+//codec:gen
+type LoginLoginCompression struct {
+	Threshold int32 `mc:"VarInt"`
+}
+
+func (LoginLoginCompression) PacketID() packetid.ClientboundPacketID {
+	return packetid.ClientboundLoginLoginCompression
+}
+
+func init() {
+	registerPacket(packetid.ClientboundLoginLoginCompression, func() ClientboundPacket {
+		return &LoginLoginCompression{}
+	})
+}