fixed score saving and score loading and changed some docs

main.py

source/api/components/mesh.py

source/api/components/rigidbody.py

source/api/components/simple_movement.py

source/api/management/options_manager.py

source/api/management/sound_manager.py

source/api/scene/base_display.py

source/api/scene/scene.py

source/api/utils/transform.py

source/game/objects/flipper.py

source/game/scenes/main_menu.py

source/game/scenes/main_pinball.py

source/game/scenes/options_menu.py

source/game/scenes/submenus/end_menu.py

source/game/scenes/submenus/pause_menu.py