Breaks the module interface by asking for the current local settings
file from the settings module. The local_file/1 dynamic predicate
retains the path of the current local file based on loading. Loading
a new settings file using load_settings/1 pushes a new local
file without replacing the old one, so that the next save_settings/0
keeps saving to the original file.
- is the absolute path of the local settings file to be
utilised by the next save_settings/1 predicate call.