* utils.py: Add helper method to parse Service Table
* Define mapping between SIM Service Number and its description
* Use the generic method read_binary of card class to read AD
* Move parsing of MSISDN to generic Card class
* Use the generic method read_binary of card class to read ACC
* Move parsing of HPLMNAcT to generic Card class
* Move parsing of OPLMNwAcT to generic Card class
* Move parsing of PLMNwAcT to generic Card class
