Feature: adding matériel to Billy.

No conformity is done when adding things (dagger or bow for example)

include/gui/gui.hpp

@@ -3,6 +3,7 @@
 
 #include <filesystem>
 #include "gui/menu/menu.hpp"
+#include "billy_objects.hpp"
 
 namespace fs = std::filesystem;
 
@@ -24,6 +25,8 @@ namespace gui {
     private:
         GuiData &data;
 
+        character::BillyObjects deal_objects{};
+
         menu::Menu menu;
 
         const fs::path font;