* refactor instancedata

* fix docs

* fix comment

* [Fix] Fix to_dict in BaseDataElement and add metainfo property.

* Update mmengine/data/base_data_element.py

Co-authored-by: liukuikun <24622904+Harold-lkk@users.noreply.github.com>

Co-authored-by: liukuikun <24622904+Harold-lkk@users.noreply.github.com>

* [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

* [Refactor] Refactor Evaluator to Metric.

* update

* fix lint

* fix doc

* fix lint

* resolve comments

* resolve comments

* remove collect_device from evaluator

* rename

* [Enhancement] refactor base data elment

* fix comment

* fix comment

* fix pop not existing key without error

* add instance_data

* update

* refine code

* add refer

Co-authored-by: liukuikun <641417025@qq.com>

* [Enhancement] refactor base data elment

* fix comment

* fix comment

* fix pop not existing key without error

* [Feature] Add Runner and Loop

* refine docstring

* refine docstring

* refine __init__ of Runner

* add Runner.save_checkpoint

* add comment for data_batch

* rename validation_cfg to val_cfg

* update branch

* update branch

* discard wear reference

* set seed for torch in dataloader worker

* refine comments

* reorder methods

* import module in __init__.py

* add runner.load_checkpoint

* rename attributes

* fix indent

* fix indent

* add comment for LOOPS

* add example for methods

* add example for methods

* refine examples

* add Runner.resume and refactor register_hooks

* remove type hint of runner in CheckpointHook

* rename before_run to before_train

* remove collate

* add before_run after_run for loop.run

* dummy collate_fn

* add more unit tests

* move call_hook('before_run') to runner

* minor fix

* add comments for collate_fn

* fix type hint

* refactor logic to load or resume checkpoint

* fix typo

* add comments for IterBasedTrainLoop

* refactor unit tests

* fix unit tests

* refactor

* fix setup_env

* refine

* minor fix

* Merge branch 'main' of github.com:open-mmlab/mmengine into zzd/add-runner

* minor fix

* minor fix

* refine

* refactor unit tests

* fix unit tests

* add launcher property

* add logger, message_hub and writer unit tests

* add cur_dataloader attribute for runner

* fix IterBasedTrainLoop

* add torch.no_grad decorator

* add master_only decorator for save_checkpoint

* add before_test_epoch in TestLoop

* refactor load_or_resume method

* refine docstring

* fix typo

* build_dataloader can handle dataset object

* add dump_config for runner

* collate_fn should not a lambda function

* minor fix

* refine docstring

* fix unit tests

* improve comments

* refine unit tests

* rename collate_fn to pseduo_collate

* add 'TODO' tag

PyTorch.

* Mock unimplemented modules and fix unit tests

* add a comment

* [WIP] abstract-data-structure

* update docs

* update

* update BaseDataSample

* fix comment and coverage 100%

* update and add _set_field

* update

* split  into base_data_element and base_data_sample

* update

* update

* update

* fix typo

* Add DefaultSampler and InfiniteSampler

* Add unit test

* Add samplers to API reference

* Update docstring

* Improve according to comments

* Rename `num_replicas` to `world_size`

* Update docstring.

* Update mmengine/data/sampler.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* Update mmengine/data/sampler.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* Fix typo in unit test

Co-authored-by: Wenwei Zhang <40779233+ZwwWayne@users.noreply.github.com>
Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>