The feature of creating folders, include / delete files, as they exist in file management services like Google Drive, One Drive, DropBox, etc. Is it done with some kind of plugin?
I'd like to apply this procedure to the application I'm developing, except instead of saving in the cloud, I'd store it in a root folder of the directory. Only the manipulation of the files would be done on the WEB.
I do not know how far to start developing something that has the same functionality.
Obs. It's just a question to know the basis of this process.