Normalize Activity application architecture

assets/translations/en.json

assets/translations/fr.json

assets/ui/button_back.png

assets/ui/button_delete_saved_game.png

assets/ui/button_resume_game.png

assets/ui/button_start.png

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/api.dart

lib/common/ui/pages/camera.dart

lib/common/ui/pages/demo.dart

lib/common/ui/pages/game.dart

lib/common/ui/pages/graph.dart

lib/common/ui/pages/parameters.dart

lib/common/ui/parameters/parameter_painter.dart

lib/common/ui/parameters/parameter_widget.dart