configuration: Use a mapping of setting value to name

Makes comboboxes always correspond to the value of the setting they're
modifying.

src/yuzu/configuration/configure_per_game.h

@@ -75,6 +75,7 @@ private:
 
     Core::System& system;
     std::unique_ptr<ConfigurationShared::TranslationMap> translations;
+    std::unique_ptr<ConfigurationShared::ComboboxTranslationMap> combobox_translations;
     std::shared_ptr<std::forward_list<ConfigurationShared::Tab*>> tab_group;
 
     std::unique_ptr<ConfigurePerGameAddons> addons_tab;