Enhance localization and world generation features

- Added new UI strings for menus, settings, and pause functionality in both English and Russian localization files.
- Introduced a new WorldPresetDef class to define world size and population settings, allowing for dynamic world creation.
- Updated world generation logic to support customizable terrain smoothing and population settings based on user-defined presets.
- Refactored WorldScene to utilize the new WorldConfig structure for improved world initialization and loading.

This commit improves the user experience by providing more options for world creation and enhancing the overall localization of the game.

Mods/Core/Languages/ru/ui.json

@@ -2,6 +2,59 @@
   "hud.world": "LittleSim | сид {0} | население {1} | {2} FPS",
   "hud.terrain": "LittleSim | террейн | сид {0} | животных: {1}",
   "hud.controls": "WASD — камера, колесо — зум, ` — консоль ('help' — список команд)",
+  "hud.paused": "ПАУЗА",
+
+  "menu.title": "LittleSim",
+  "menu.subtitle": "бог-игра: минимум графики, максимум симуляции",
+  "menu.newworld": "Новый мир",
+  "menu.load": "Загрузка",
+  "menu.settings": "Настройки",
+  "menu.credits": "Авторы",
+  "menu.quit": "Выход",
+
+  "newworld.title": "Новый мир",
+  "newworld.name": "Название",
+  "newworld.defaultname": "Новый мир",
+  "newworld.size": "Размер",
+  "newworld.seed": "Сид",
+  "newworld.random": "Случайно",
+  "newworld.smoothing": "Сглаживание рельефа",
+  "newworld.create": "Создать",
+  "newworld.back": "Назад",
+
+  "load.title": "Загрузка",
+  "load.empty": "Сохранений пока нет",
+  "load.load": "Загрузить",
+  "load.delete": "Удалить",
+  "load.back": "Назад",
+
+  "settings.title": "Настройки",
+  "settings.language": "Язык",
+  "settings.fullscreen": "Полный экран",
+  "settings.vsync": "Вертикальная синхронизация",
+  "settings.resolution": "Разрешение",
+  "settings.volume": "Громкость",
+  "settings.apply": "Применить",
+  "settings.back": "Назад",
+
+  "pause.title": "Пауза",
+  "pause.resume": "Продолжить",
+  "pause.settings": "Настройки",
+  "pause.save": "Сохранить",
+  "pause.mainmenu": "Главное меню",
+  "pause.quit": "Выход",
+  "pause.saved": "Сохранено: {0}",
+
+  "speed.pause": "⏸",
+
+  "credits.title": "Авторы",
+  "credits.author": "mrleo1nid",
+  "credits.role": "Идея, код, движок mrgameeng",
+  "credits.back": "Назад",
+
+  "preset.small": "Маленький",
+  "preset.medium": "Средний",
+  "preset.large": "Большой",
 
   "terrain.deepwater": "глубокая вода",
   "terrain.water": "вода",