Support for solving Golf using bh-solver.
See https://github.com/shlomif/black-hole-solitaire and
https://www.shlomifish.org/open-source/projects/black-hole-solitaire-solver/
.
Reviewers: KDE Games
Subscribers: kde-games-devel
Differential Revision: https://phabricator.kde.org/D18566