Locale: recipe item names, Russian scenario strings file

- Names/descriptions for the recipe item items/recipe/wolf_meat_to_ration
  (en/ru); the locale atlas reported the keys as referenced but undeclared.
- locale/scenarios_ru.properties: the Russian scenario strings get their
  own file next to scenarios_en, as the scenario-string convention
  requires for every language.

locale/scenarios_ru.properties

@@ -0,0 +1,3 @@
+rooms/kitchen/prompt = Комната оборудованная под кухню
+rooms/kitchen/opt_exit = Выйти
+rooms/kitchen/opt_cook = Готовить