Place the Plugin directory in your KiCad plugins folder.
You can find your KiCad plugin folder location in Pcbnew by clicking the menubar and go Tools > External plugins > Reveal Plugin Folder.
The main.py file is the entry point for debug purposes
execute the module using the KiCad's python interpreter
on macos use this command to debug: /Applications/KiCad/KiCad.app/Contents/Frameworks/Python.framework/Versions/Current/bin/python3.9 -m KiCadWorkspaceOrganizer
The init.py file is the entry point for KiCad.