all of the changes

include/FluidSim/Desktop/ScenarioMenu.hpp

@@ -0,0 +1,7 @@
+#pragma once
+#include "FluidSim/ScenarioCatalog.hpp"
+#include <SFML/Graphics.hpp>
+#include <optional>
+namespace fluidsim::port::desktop {
+std::optional<std::size_t> choose_scenario(sf::RenderWindow&,const sf::Font*,const std::vector<ScenarioExample>&);
+}