Function slos_filesystem::traverse_node

pub fn traverse_node<'x>(
    root: &'x mut dyn FsNode, 
    subpath: Vec<String>, 
    ignore_root: bool
) -> Option<&'x mut dyn FsNode>

Traverse the directory node root to find the node at subpath

If ignore_root is true, this method will return None instead of Some(root) when subpath is empty.