SFTP server support on Windows

[James Wrigley <james@xxxxxxxxxxxxxx>]

Hi there,
I'm looking into making a toy implementation of an SFTP server for using in
tests based on this example:
https://gitlab.com/libssh/libssh-mirror/-/blob/master/examples/sample_sftpserver.c?ref_type=heads

But I see that most of the code in sftpserver.c is disabled on Windows. Why
is that? And how much work would it be to get it running on Windows?

Thanks,
James