* [Feature] Add BaseInferencer (#773)

* Update BaseInferencer

* Fix ci

* Fix CI and rename iferencer to infer

* Fix CI

* Add renamed file

* Add test file

* Adjust interface sequence

* refine preprocess

* Update unit test

Update unit test

* Update unit test

* Fix unit test

* Fix as comment

* Minor refine

* Fix docstring and support load image from different backend

* Support load collate_fn from downstream repos, refine dispatch

* Minor refine

* Fix lint

* refine grammar

* Remove FileClient

* Refine docstring

* add rich

* Add list_models

* Add list_models

* Remove backend args

* Minor refine

* Fix typos in docs and type hints (#787)

* [Fix] Add _inputs_to_list (#795)

* Add preprocess inputs

* Add type hint

* update api/infer in index.rst

* rename preprocess_inputs to _inputs_to_list

* Fix doc format

* Update infer.py

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

* [Fix] Fix alias type (#801)

* [Enhance] Support loading model config from checkpoint (#864)

* first commit

* [Enhance] Support build model from weight

* minor refine

* Fix type hint

* refine comments

* Update docstring

* refine as comment

* Add  method

* Refine docstring

* Fix as comment

* refine comments

* Refine warning message

* Fix unit test and refine comments

* replace MODULE2PACKAGE to MODULE2PAKCAGE

* Fix typo and syntax error in docstring

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

* Add runner test cast

* Fix unit test

* fix unit test

* pop None if key does not exist

* Fix is_model_wrapper and force register class in test_runner

* [Fix] Fix is_model_wrapper

* destroy group after ut

* register module in testcase

* fix as comment

* minor refine

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

* fix lint

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

* fix merge ci

* make timeout larger

* add testing utils

* fix ut

* add blank line betweeen `Args` and `Returns`

* 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

* [Enhancement] Provide MultiProcessTestCase to test distributed related modules

* remove debugging info

* add timeout property

* Fix pt1.5 unit tests.

* move to mmengine.testing