created Player and Dealer class

src/pyjack/dealer.py

@@ -0,0 +1,15 @@
+from pyjack.deck import Deck
+from pyjack.player import Player
+
+
+class Dealer(Player):
+    """The Dealer inherits all player functionality but has a specific,
+    automated turn behavior."""
+
+    def __init__(self, chips: int) -> None:
+        super().__init__(chips)
+
+    def play(self, deck: Deck) -> None:
+        """Called only after the human player has finished their turn."""
+        while self.hand.value < 17:
+            self.hit(deck)