Added Authentication for NTAG2xx Devices

[chrisgrill]

Added functionality and included a working example based on the ntag2xx_read example.

[brysonreece]

Would love to see this merged as I'm working on a PN53X based access control system and would like to be able to authenticate with a tag instead of relying on the UID.

[chrisgrill]

Not sure if I didn't follow a procedure or something. Is there anything I can do to help get this merged?

[ladyada]

hiya we haven't done an issue/pR sweep on this library - when we do, we'll merge any outstanding PRs! there's a lot of physical testing required, its not easy to merge :)

bryson, for now you can use the fork chis made!

[brysonreece]

Thanks for the reply! I've gone ahead and cleaned up the code written by @chrisgrill, added correct documentation, etc over at PR #59

(If you want me to add you as a co-author @chrisgrill, just let me know and I can get it done)

Looking forward to it!

[fatalitykill97]

I am a rookie developer, I need to authenticate with an NTAG215, the password is 1234 but I do not know how to put it in the byte
byte pwd [8] = {0x31,0x32,0x33,0x34};
However, I am mistaken and does not let me access the blocks, I thank you if you can help me