Merge branch '14-normalize-game-architecture' into 'master'

assets/ui/game_win.png

assets/ui/placeholder.png

fastlane/metadata/android/en-US/changelogs/13.txt

fastlane/metadata/android/fr-FR/changelogs/13.txt

icons/level_easy.svg

icons/level_hard.svg

icons/level_medium.svg

icons/skin_images.svg

icons/skins/default/empty.svg

icons/skins/images/empty.svg

lib/config/default_game_settings.dart

lib/config/default_global_settings.dart

lib/config/menu.dart

lib/config/theme.dart

lib/cubit/game_cubit.dart

lib/cubit/game_state.dart

lib/cubit/nav_cubit.dart

lib/cubit/settings_game_cubit.dart

lib/cubit/settings_game_state.dart

lib/cubit/settings_global_cubit.dart