[Game][Counters] Split counters into AbstractCounter (graphics) and CounterState (logic) (#6917)

* [Counters] Split counters into graphics and logic states

Took 22 minutes

* Don't have widget hold pointer to state -> Copy what we need and subscribe to changes.

Took 12 minutes

Took 5 seconds

* Sync value too.

Took 3 minutes

---------

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

cockatrice/src/game/board/counter_state.h

@@ -0,0 +1,51 @@
+#ifndef COCKATRICE_COUNTER_STATE_H
+#define COCKATRICE_COUNTER_STATE_H
+
+#include <QColor>
+#include <QObject>
+#include <QString>
+#include <libcockatrice/protocol/pb/serverinfo_counter.pb.h>
+
+class CounterState : public QObject
+{
+    Q_OBJECT
+public:
+    CounterState(int id, const QString &name, const QColor &color, int radius, int value, QObject *parent = nullptr);
+
+    static CounterState *fromProto(const ServerInfo_Counter &counter, QObject *parent = nullptr);
+
+    int getId() const
+    {
+        return id;
+    }
+    QString getName() const
+    {
+        return name;
+    }
+    QColor getColor() const
+    {
+        return color;
+    }
+    int getRadius() const
+    {
+        return radius;
+    }
+    int getValue() const
+    {
+        return value;
+    }
+
+    void setValue(int newValue);
+
+signals:
+    void valueChanged(int oldValue, int newValue);
+
+private:
+    int id;
+    QString name;
+    QColor color;
+    int radius;
+    int value;
+};
+
+#endif // COCKATRICE_COUNTER_STATE_H