add balancing tool target

src/balancing/BalancingConfig.h

@@ -0,0 +1,44 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include <QPoint>
+
+struct ArenaStationEntry
+{
+    std::string stationType;  // "player_station" or "enemy_station"
+    int level;
+    QPoint position;
+};
+
+struct ArenaShipEntry
+{
+    std::string schematicId;
+    int level;
+    int count;
+};
+
+struct ArenaTeamConfig
+{
+    std::string name;
+    std::vector<ArenaShipEntry> ships;
+    std::vector<ArenaStationEntry> stations;
+};
+
+struct ArenaConfig
+{
+    std::string name;
+    int heightTiles;
+    int playerBufferWidth;
+    int contestZoneWidth;
+    int enemyBufferWidth;
+    ArenaTeamConfig teams[2];
+};
+
+struct BalancingConfig
+{
+    std::vector<ArenaConfig> arenas;
+};
+
+BalancingConfig loadBalancingConfig(const std::string& path);