Extended cmd mechanism to provide class defined responses and
implemented SMS center verification to check if SIM card is properly
cofigured and is able to send SMS messagess at all.
This check is needed because if SMS Center is lost we are not able
to send SMS messages with no verbose error codes.
Added milliseconds and noexcept specifiers for at commands
Fixed Chanel name to Channel
[EGD-4063] Added handling of PIN/PUK codes for SIM card objects.
SimCard class was added (supply pin and puk, change sim, get state, get sim lock infromation, get attempts counters)
URCCpin via URC handler was added
New message type to send data handled in URCCpin handler to ServiceCellular
