implement ship modules

src/ui/MainWindow.h

@@ -4,6 +4,7 @@
 
 #include <QWidget>
 
+#include "EntityId.h"
 #include "Tick.h"
 #include "VisualsConfig.h"
 
@@ -29,6 +30,7 @@ private slots:
     void onGameOver();
     void onStateUpdated(Tick tick, int blocks, double speed);
     void onEscapeMenuRequested();
+    void onLayoutDialogRequested(EntityId shipyardId);
 
 private:
     void layoutPanels();