Extension File Sorter by Oleksandr Smyrnov

• Taking '-s' or '--source' parameter for one obligatory command line argument which indicates the source folder.
• All files in the folder and subfolders are sorted by widely-known extensions.
• Folders: 'documents', 'archives', 'video', 'music', 'unknown'. These folders are excluded from sorting.
• Folder 'unknown' is for files with unknown extensions.
• You can either sort or not sort 'unknown' files. Select the option at the beginning of thescript execution.
• Empty folders are deleted.
• You can add your own extensions and folders to the code in main() function.
• Archives are extracted to 'archives' folder.
• At the end, script showing lists known and uknown extensions and files.