[Game/Zones] Simple move refactor to differentiate between logic and graphics for zones (#6903)

* [Game/Zones] Simple move refactor to differentiate between logic and graphics for zones

Took 21 minutes

* Clean up game/zones/logic folder.

Took 6 minutes

* Adjust tests.

Took 3 minutes

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

cockatrice/src/game_graphics/zones/stack_zone.h

@@ -0,0 +1,32 @@
+/**
+ * @file stack_zone.h
+ * @ingroup GameGraphicsZones
+ * @brief Graphical zone for the stack, displaying cards in a vertical pile.
+ */
+
+#ifndef STACKZONE_H
+#define STACKZONE_H
+
+#include "../../game/zones/stack_zone_logic.h"
+#include "select_zone.h"
+
+class StackZone : public SelectZone
+{
+    Q_OBJECT
+private:
+    qreal zoneHeight;
+private slots:
+    void updateBg();
+
+public:
+    StackZone(StackZoneLogic *_logic, int _zoneHeight, QGraphicsItem *parent);
+    /// @brief Resizes the stack zone height, e.g. when sharing vertical space with the command zone.
+    void setHeight(qreal newHeight);
+    void
+    handleDropEvent(const QList<CardDragItem *> &dragItems, CardZoneLogic *startZone, const QPoint &dropPoint) override;
+    QRectF boundingRect() const override;
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
+    void reorganizeCards() override;
+};
+
+#endif