Function ichwh::symlink_chain_in_dir

pub async fn symlink_chain_in_dir<'_, P: AsRef<Path>>(
    bin: &'_ str, 
    dir: P
) -> IchwhResult<Vec<PathBuf>>

Find a binary in a specific directory and, if it's a symlink, all intermediate files in its chain. Returns an ordered Vec, with the first simlink at index 0 and the final binary at the end. If a symlink is encountered with a relative path, it assumes the path is relative to the symlink's parent.