* [Fix] Fix several config file errors in 2.0

* change _base_ config file name in configs

* inference, train_test tutorial

* fix

* add --work-dir

* transform tutorial

* fix

* [Fix] Config name in ut

* lint

* rename ann configs

* update ann yml

* update

* update

* update

* update

* update

* update ann readme

* update

* update deeplabv3

* update readme

* fix yml

* fix beit

* [WIP] Refactor data flow

* model return

* [WIP] Refactor data flow

* support data_samples is optional

* fix benchmark

* fix base

* minors

* rebase

* fix api

* ut

* fix api inference

* comments

* docstring

* docstring

* docstring

* fix bug of slide inference

* add assert c > 1

* [WIP] mmcv-clean

* [WIP]Remove modules from mmcv.runner and mmcv.utils

* wip

* fix import mmengine

* remove ut

* loadcheckpoint in mae

* config tutorial

* update config name convention

* minor change

* rewrite name

* modify scripts dirname

* update links

* support custom runner

* fix

* [Doc] MMSeg 1.x Documentation

* revise index

* update api doc

* fix

* fix

* [Fix] Fix repo based on refactory standard

* fix ut

* [Feature] Add P1 DataTransform

* fix unit test error

* fix @cache_randomness location

* [Fix] Fix after iter `SegVisualizationHook`

* ut

* [Fix] Fix SegLocalVisualizer gt_sem_seg cuda tensor error

* fix ut error and add config visualizer dict

* fix ut error

* [Feature] Add SegVisualizer

* change name to visualizer_example

* fix inference api

* fix video demo and refine inference api

* fix

* mmseg compose

* set default device to cuda:0

* fix import

* update dir

* rm engine/visualizer ut

* refine inference api and docs

* rename

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