Functionality needed for the tournament

Added leave_game so the coordinator can save the replay file of a game.

python-api-src/library.cpp

@@ -31,6 +31,7 @@ PYBIND11_MODULE(library, m)
 		.def("load_replay_list",&sc2::Coordinator::SetReplayPath, "replay_path"_a)
 		.def("add_replay_observer",&sc2::Coordinator::AddReplayObserver, "replay_observer"_a)
 		.def("set_replay_perspective",&sc2::Coordinator::SetReplayPerspective, "perspective"_a)
+		.def("leave_game", &sc2::Coordinator::LeaveGame)
 		;
 
     py::enum_<sc2::Race>(m, "Race")