extracted game logic into separate library

engine/CardStack.hpp

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include "Card.hpp"
+
+class CardStack
+{
+public:
+	CardStack();
+	~CardStack();
+
+	std::shared_ptr<Card> DrawCard();
+	inline bool Empty() const { return stack.empty(); }
+
+private:
+	std::vector<std::shared_ptr<Card>> stack;
+};