git-arc: Add a create-draft mode

Make it possible to create a review without publishing it.  This should
be useful when one wants to restrict the visibility of a review, as that
cannot be done via the command line.  Note that a draft review is still
publicly visible if one can guess the URL, but creating one does not
result in email notifications to subscribers etc., nor does a draft
appear in the creating user's activity log.

Once a draft is ready, one can publish it via the web UI.

Reviewed by:	jrm
Differential Revision:	https://reviews.freebsd.org/D56664

0 files changed, 0 insertions, 0 deletions