Function handle_playback_buttons 

pub fn handle_playback_buttons(
    interactions: ParamSet<'_, '_, (Query<'_, '_, &Interaction, (Changed<Interaction>, With<Button>, With<PlaybackPlayPauseButton>)>, Query<'_, '_, &Interaction, (Changed<Interaction>, With<Button>, With<PlaybackStepBackButton>, Without<PlaybackPlayPauseButton>)>, Query<'_, '_, &Interaction, (Changed<Interaction>, With<Button>, With<PlaybackStepForwardButton>, Without<PlaybackPlayPauseButton>, Without<PlaybackStepBackButton>)>, Query<'_, '_, (&Interaction, &PlaybackSpeedButton), (Changed<Interaction>, With<Button>, Without<PlaybackPlayPauseButton>, Without<PlaybackStepBackButton>, Without<PlaybackStepForwardButton>)>)>,
    viewer: ResMut<'_, ViewerState>,
    playback: ResMut<'_, PlaybackState>,
)