draft for a Mifare classic NACK bug detection.

the idea is to have a statistically solid conclusion if tag does or does not have the NACK bug.

-in short, ref  https://github.com/iceman1001/proxmark3/issues/141
NACK bug;  when a tag responds with a NACK to a 8 byte nonce exchange during authentication when the bytes are wrong but the parity bits are correct.

This is a strong oracle which is used in the darkside attack.

include/usb_cmd.h

@@ -231,6 +231,7 @@ typedef struct{
 #define CMD_MIFARE_DESFIRE                                                0x072e
 
 #define CMD_MIFARE_COLLECT_NONCES										  0x072f
+#define CMD_MIFARE_NACK_DETECT											  0x0730
 
 #define CMD_HF_SNIFFER                                                    0x0800