derive threat cost dynamically

src/lib/sim/ThreatCostCalculator.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "ShipLayout.h"
+
+struct GameConfig;
+
+struct ThreatCostTable
+{
+    std::map<std::string, double> itemThreat;
+    double scrapThreat = 0.0;
+};
+
+ThreatCostTable computeThreatCostTable(const GameConfig& config);
+
+double calculateShipThreatCost(const ThreatCostTable& table,
+                               const GameConfig& config,
+                               const std::string& shipId,
+                               const std::vector<PlacedModule>& modules);