Add a directory entry
Add an entry read from a file on disk. The file is streamed.
Add an entry whose contents come from a stream.
Whether an entry is zip64 has to be settled before any of its data is
written, so a source of unknown length is read ahead of up to
probeLimit bytes to find out which it is.
Optionalmode?: numberOptionalmtime?: DateOptionalsizeHint?: numberhow large the source is known to be, if it is
Write the central directory and the end of central directory records. The writer cannot be used afterwards.
Add an entry from content held in memory