ADD: "hf legic wipe" - it autodetects tagtype and fills all bytes from offset 7...

ADD:  "hf legic wipe" - it autodetects tagtype and fills all bytes from offset 7 to end with zeros.

Fills a legic tag memory with zeros. From byte7 and to the end.
 Usage:  hf legic wipe [h]
Options:
      h             : this help

Samples:
      hf legic wipe