* Move the design of hook to design/hook.md

* add relative links in docs

* update docstring of hooks

* refine checkpointhook docs

* refine

* fix comments

* refine

* add logging.md link in hook.md

* resolve comments

* fix typo

* [Fix] Fix some bugs in hooks and runner.

* fix markdown

* fix latex formula

* resolve comments

* [WIP] add inline

* refactor vis module

* [Refactor] according review

* [Fix] fix comment

* fix some error

* Get sub visualizer be Visualizer.get_instance

* fix conflict

* fix lint

* fix unit test

* fix mypy

* fix comment

* fix lint

* update docstr

* update

* update instancedata

* remove replace __mro__ with issubclass

Co-authored-by: PJLAB\huanghaian <1286304229@qq.com>
Co-authored-by: HAOCHENYE <21724054@zju.edu.cn>

* [Refactor] Refactor data_batch type.

* fix sampler

* [Refactor] Remove cur_dataloader in runner.

* fix set_epoch

* [Enhancement] refactor base data elment

* fix comment

* fix comment

* fix pop not existing key without error

* [Refactor] Add batch_idx to hook input.

* update

* [WIP] testvisualizationhook

* add TestNaiveVisualizationHook

* fix comment

* unpad

* batch imdenormalize

* fix comment

* fix comment