retire commons.function

[serengil]

This module stores some folder related and package related functionalities. Functions file name is not a good identifier. So, we should have package_utils and folder_utils under commons folder. It clearly separates the concerns related to packages and folders. This naming convention is concise and makes it easier for one to understand the purpose of each module when working on the project. It's a good practice to keep your code organized and modular, and the chosen names accurately convey the functionality within each module.

[serengil]

Closed with PR - #999