packaging: include `windows-curses` on Windows
Otherwise the interface degrades to the old hunk selection method on Windows
when `ui.tweakdefaults=1`. I've been using this for a couple of months without
any issues, other than it seems to toggle off edit mode for the terminal when
run through MSYS. Using cmd.exe seems to work fine.
Differential Revision: https://phab.mercurial-scm.org/D9805
edition = "2018"
max_width = 79
wrap_comments = true
error_on_line_overflow = true