Standard 52 Cards Deck
Card, a card includes a Suit and a Value which is a char in range from '1' to 'A'.
Deck is a containner of Cards.
Person class is base class for all charactors in the game.
Dealer inherits from Person and hold a full Deck of Cards.
Player also inherits from Person but hold a pointer to Deck, which could be modified when dealer deal cards to player.