* [Feature] Implememnt the universal visualizer for multiple task.
* Update tools
* Improve according to comments.
* Fix tools docs
* Add --test-cfg option and set default collate function.
* [Improve] Speed up data preprocessor.
* Add ClsDataSample serialization override functions.
* Add unit tests
* Modify configs to fit new mixup args.
* Fix `num_classes` of the ImageNet-21k config.
* Update docs.
* refactor dataset tutorials
* split into user_guide and advance_guide
* refine
* Fix dataset preparasion tutorial.
* refine CN docs
* update docs API doc link
* refine new a dataset
* refine new a dataset
* refine new a dataset
Co-authored-by: mzr1996 <mzr1996@163.com>
* [Refactor] Refactor the rest data transforms and fix some docstring.
* Use `mmengine` instead of `mmcv`
* Refactor KFold dataset tools
* Fix docstring according to comments
* [Refactor] Refactor the docs structure.
* Rename `getting_started.md` to `get_started.md`
* Rename `transforms` to `data_process`