pub fn get_config_file_or_default() -> PathBufExpand description
Returns the first Signstar configuration file available, or the default if none found.
Considers files named config.toml in the following directories in descending priority:
/etc/signstar/run/signstar/usr/local/share/signstar/usr/share/signstar
The first existing file is returned.
If no file is found, the default location /usr/share/signstar/config.toml is returned.