Bug 609

Currently, the game will refill the deck with the discard pile. 

However, if all the player do not play card and keep drawing card, there are will

be case that both discard pile and deck are empty. Error occur as no card can be 

refilled.

Should modify the code the handle this case.

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Exception in thread "main" java.util.NoSuchElementException
at java.base/java.util.ArrayDeque.removeFirst(ArrayDeque.java:362)
at java.base/java.util.ArrayDeque.pop(ArrayDeque.java:593)
at com.cs3343.gp15.game.DeckManager.DrawCard(DeckManager.java:68)
at com.cs3343.gp15.game.GameManager.playerDrawCard(GameManager.java:162)
at com.cs3343.gp15.game.GameManager.drawProcess(GameManager.java:103)
at com.cs3343.gp15.game.GameManager.computerTurn(GameManager.java:115)
at com.cs3343.gp15.game.GameManager.playerAction(GameManager.java:74)
at com.cs3343.gp15.game.GameManager.gameProcess(GameManager.java:47)
at com.cs3343.gp15.game.Main.main(Main.java:13)