Recursive calculation of folder sizes

As in Mac OS 9 and above,
The ability to be in list view, and calculate the total size of a directory is missing from filer. Could this be added please:
![219569509-d386bcf7-9c4e-4aa1-8b27-d490b5b16abf](https://user-images.githubusercontent.com/91699183/226189756-1803e5ec-77ba-441e-b18d-322b0516f810.gif)
