* add trex algorithm for pong

* sort style

* add atari, ll,cp; fix device, collision; add_ppo

* add accuracy evaluation

* correct style

* add seed to make sure results are replicable

* remove useless part in cum return  of model part

* add mujoco onppo training pipeline; ppo config

* improve style

* add sac training config for mujoco

* add log, add save data; polish config

* logger; hyperparameter;walker

* correct style

* modify else condition

* change rnd to trex

* revise according to comments, add eposode collect

* new collect mode for trex, fix all bugs, commnets

* final change

* polish after the final comment

* add readme/test

* add test for serial entry of trex/gcl

* sort style

* change mujoco to cartpole for test for trex_onppo

* remove files generated by testing

* revise tests for entry

* sort style

* revise tests

* modify pytest

* fix(nyz): speed up ppg/ppo and marl algo unittest

* polish(nyz): speed up trex unittest and fix trex entry default config bug

* fix(nyz): fix same name bug

* fix(nyz): fix remove conflict bug(ci skip)
Co-authored-by: Nniuyazhe <niuyazhe@sensetime.com>