Function dir_structure_to_string

pub fn dir_structure_to_string(
    source_folder: &str,
) -> Result<Vec<String>, BrownError>

The dir_structure_to_string will convert all the paths of a folder into a vec of strings.

This function takes the name of the folder and it returns us a vec containing paths to the folder and all its subfolders (The returned vec will include the path to the parent folder along with all its sub folders).

This fn is helpful when we want to create a new folder structure as per an existing folder structure.