Plugin for the Eye of Gnome image viewer to create a symlink for the current image in a subfolder
Place the two files symlink.py & symlink.plugin in the EOG plugin directory.
Check the EOG documentation for the location on your machine.
Note: On Ubuntu 18.04: /usr/lib/x86_64-linux-gnu/eog/plugins/
Enable the plugin by going in the application menu -> Preferences -> Plugins tab -> Symlink in folder
Edit the _FOLDER_NAME in symlink.py:28 to the name of your choosing
Press the S key to create the symlink. Alternatively, you can click on the Application menu -> Create Symlink