Add a beekeeper option for attempting to stop the whole pipeline

Created by: mkszuba

Block all active Beekeepers, attempt to kill all active workers, report on both. This can fail to shut everything down because the current beekeeper might not be able to reach certain meadows (e.g. LOCAL on a different host) or have insufficient permissions to kill certain workers (e.g. processes or batch jobs belonging to a different user) but it seems to be all we could do without actively communicating with other Beekeepers and it's better than nothing.