* 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
* rename global accessible and intergration get_sintance and create_instance
* move ManagerMixin to utils
* fix as docstring and seporate get_instance to get_instance and get_current_instance
* fix lint
* fix docstring, rename and move test_global_meta
* rename LogBuffer to HistoryBuffer, rename MessageHub methods, MessageHub support resume
* refine MMLogger timestamp, update unit test
* MMLogger add logger_name arguments
* Fix docstring
* change default logger_name to mmengine
* Fix docstring comment and unitt test
* fix docstring
fix docstring
* fix docstring
* Fix lint
* Fix hook unit test
* Fix comments
* should not accept other arguments if corresponding instance has been created
* fix logging ddp file saving
* fix logging ddp file saving
* fix docstring
* fix unit test
* fix docstring as comment
Zaida Zhou
Mashiro