Add colors theme selector

android/gradle.properties

fastlane/metadata/android/en-US/changelogs/20.txt

fastlane/metadata/android/fr-FR/changelogs/20.txt

lib/config/default_game_settings.dart

lib/cubit/game_cubit.dart

lib/cubit/settings_cubit.dart

lib/models/game.dart

lib/models/game_settings.dart

lib/ui/painters/game_board_painter.dart

lib/ui/painters/parameter_painter.dart

lib/ui/widgets/game_top_indicator.dart

lib/ui/widgets/parameters.dart

lib/utils/color_theme.dart

pubspec.yaml