* update doc

* update doc

* Update mmengine/structures/base_data_element.py

* Update mmengine/structures/base_data_element.py

* Apply suggestions from code review

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

* remove redundant attribute in dump or print

* optimize efficiency

Co-authored-by: HAOCHENYE <21724054@zju.edu.cn>

* Rename data to structure

* adjust the way to import module

* adjust the way to import module

* rename Structure to Data Structures in docs api

* rename structure to structures

* support using some modules of mmengine without torch

* fix circleci config

* fix circleci config

* fix registry ut

* minor fix

* move init method from model/utils to model/weight_init.py

* move init method from model/utils to model/weight_init.py

* move sync_bn to model

* move functions depending on torch to dl_utils

* format import

* fix logging ut

* add weight init in model/__init__.py

* move get_config and get_model to mmengine/hub

* move log_processor.py to mmengine/runner

* fix ut

* Add TimeCounter in dl_utils/__init__.py

* Fix docstring format of BaseDataElement

* fix docstring

* 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>

* [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

* [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