Bake gets --jobs execution modes; builds replay from provenance
Breaking (minor)Bake now supports configuring job execution modes and parallelization limits with the --jobs/-j flag, including defer-error to delay cancellation of failed jobs and defer-output to wait for all jobs before exporting. Added an experimental buildx replay build command that rebuilds historical builds from recorded provenance, and Buildx --set overrides now use singular keys and can clear array values.