[Feature] Support dark dataset test (#815)

* rewrite init function

* support dark_zurich test

* reset image size

* add night

* add train_pipeline

* init function parameters

* remove base dataset config

* remove fcn config

* update doc

* add datasets to README

* update doc

* fix table of PSPNet config

* fix table of PSPNet config

* change 'model' tp 'evaluation checkpoint'

* fix typos in README_zh-CN

Co-authored-by: MengzhangLI <mcmong@pku.edu.cn>