Basically, you just enter format of the file and folder where it should go, if folder does not exist, it will create one, if exists it will just move file there, you can move multiple files into one folder. You can also use automatic sorting, which just creates separate folder for each format.
You can install this directly from the source code using the Fyne command as follows:
go install fyne.io/fyne/v2/cmd/fyne@latest
fyne get github.com/ustymhentosh/SeaSorter/main