Archive save may fail silently

When the archive file is locked by another program, the archive save will silently fail.
Should we consider checking the return value of file operations, or replacing them with std::filesystem?

https://github.com/troldal/Zippy/blob/a838de8522f9051df0d1b202473bb6befe648702/library/Zippy/ZipArchive.hpp#L491