implement blueprints

src/ui/MainWindow.h

@@ -12,6 +12,7 @@ class GameWorldView;
 class HeaderBar;
 class SelectedBuildingPanel;
 class BuildButtonGrid;
+class BlueprintPanel;
 class QResizeEvent;
 
 class MainWindow : public QWidget
@@ -39,5 +40,6 @@ private:
     HeaderBar*             m_headerBar;
     SelectedBuildingPanel* m_selectedBuildingPanel;
     BuildButtonGrid*       m_buildButtonGrid;
+    BlueprintPanel*        m_blueprintPanel;
     QWidget*               m_bottomPanel;
 };