bug is that error rasied by calling update_res() when sublayer does not have _save_sub_res_hook() because nn.Sequential and nn.LayerList is not TheseusLayer.

* fox dist err

* fix init

* fix init

* add distillation loss func and rec distillation

supplement to PR #1581

1. remove WrapLayer and wrap_theseus;
2. support call update_res() one more;
3. optim parse_pattern_str() to return list of layer parsed.