Normalize Activity application architecture

assets/translations/en.json

assets/translations/fr.json

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

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

lib/common/config/activity_page.dart

lib/common/config/screen.dart

lib/common/cubit/nav/nav_cubit_pages.dart

lib/common/cubit/nav/nav_cubit_screens.dart

lib/common/ui/nav/bottom_nav_bar.dart

lib/common/ui/nav/global_app_bar.dart

lib/common/ui/pages/game.dart

lib/common/ui/pages/parameters.dart

lib/common/ui/parameters/parameter_painter.dart

lib/common/ui/parameters/parameter_widget.dart

lib/common/ui/screens/about.dart

lib/common/ui/screens/activity.dart

lib/common/ui/screens/settings.dart

lib/config/application_config.dart

lib/config/default_activity_settings.dart

lib/cubit/activity/activity_cubit.dart