balancing arenas can be started individually

src/balancing/ArenaWidget.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include <QFrame>
+#include <QLabel>
+#include <QPushButton>
+
+#include "ArenaSimulation.h"
+
+class ArenaWidget : public QFrame
+{
+    Q_OBJECT
+
+public:
+    explicit ArenaWidget(const std::string& arenaName, QWidget* parent = nullptr);
+
+    void updateStatus(const ArenaStatus& status);
+    void startSimulation();
+
+signals:
+    void startRequested();
+
+private:
+    void buildLayout(const std::string& arenaName);
+
+    QLabel* m_titleLabel;
+    QLabel* m_team1Header;
+    QLabel* m_team2Header;
+    QLabel* m_team1Content;
+    QLabel* m_team2Content;
+    QPushButton* m_startButton;
+    bool m_running;
+    bool m_wasFinished;
+};