Add card label

[Styne13]

Summary

• implement get_card_label function in sc_hsm.c
• update relevant callback functions parse_token_info and parse_ef_dir

Details / Impact

• initilization with sc-hsm-tool and label option worked:
  sc-hsm-tool --initialize --so-pin 3537363231383830 --pin 648219 --label "Test123ThisIsAVeryLongHSMLabel"
• showing label details of the connected hsm with pkcs15-tool -D worked
• ToDo: Check why callback to parse_token_info will cause a crash of the pico

Testing

• tested on raspberry pi pico (RP2-B2)

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• Yes, I agree

Anything else?

I am not aware if removing of the parse_token_info callback for file 0x2f03 will have any cons for other functions.