Function add_child_item

fn add_child_item<'a>(
    children: &mut Vec<ChildItem<'a>>,
    current: &mut u64,
    view_rect: &ViewRect,
    line_index: usize,
    view_mode: ViewMode,
    value_mode: ValueMode,
    child: QueueItem<'a>,
    filtered: Option<FilterMode>,
) -> bool