* chore(cli): update download help messages Signed-off-by: Panos Vagenas <35837085+vagenas@users.noreply.github.com> * add `--all` flag to model download CLI Signed-off-by: Panos Vagenas <pva@zurich.ibm.com> --------- Signed-off-by: Panos Vagenas <35837085+vagenas@users.noreply.github.com> Signed-off-by: Panos Vagenas <pva@zurich.ibm.com>