* slime volley env in dizoo, first commit

* fix bug in slime volley env

* modify volley env to satisfy ding 1v1 requirements; add naive self-play and league training pipeline(evaluator is not finished, now use a very naive one)

* adopt volley builtin ai as default eval opponent

* polish(nyz): polish slime_volley_env and its test

* feature(nyz): add slime_volley vs bot ppo demo

* feature(nyz): add battle_sample_serial_collector and adapt abnormal check in subprocess env manager

* feature(nyz): add slime volley self-play demo

* style(nyz): add slime_volleyball env gif and split MARL and selfplay label

* feature(nyz): add save replay function in slime volleyball env
Co-authored-by: Nzlx-sensetime <zhaoliangxuan@sensetime.com>
Co-authored-by: Nniuyazhe <niuyazhe@sensetime.com>