implement ship modules

src/lib/config/ConfigLoader.h

@@ -4,7 +4,7 @@
 
 #include "GameConfig.h"
 
-// Parses the five simulation TOML files from a directory and returns a fully
+// Parses all simulation TOML files from a directory and returns a fully
 // populated, immutable GameConfig. Throws std::runtime_error on any parse or
 // validation failure; the exception message identifies the offending file,
 // field, or formula (see architecture.md "Config Loading").
@@ -21,4 +21,5 @@ public:
     static RecipesConfig loadRecipes(const std::string& path);
     static ShipsConfig loadShips(const std::string& path);
     static StationsConfig loadStations(const std::string& path);
+    static ModulesConfig loadModules(const std::string& path);
 };