The filename to which to persistently store our list of seen users
between executions of the program.
This is only the basename of the file. It will be completed with a path
to the default (or specified) resource directory, which varies by
platform. Expect this variable to have values like
"/home/user/.local/share/kameloso/servers/irc.libera.chat/seen.json"
after the plugin has been instantiated.
The filename to which to persistently store our list of seen users between executions of the program.
This is only the basename of the file. It will be completed with a path to the default (or specified) resource directory, which varies by platform. Expect this variable to have values like "/home/user/.local/share/kameloso/servers/irc.libera.chat/seen.json" after the plugin has been instantiated.