GitLab

* [Feature] support to calculate FLOPs of GN, IN, LN

* Update flops_counter.py

* Update flops_counter.py

* Add utils to calculate model complexity info

* remove _InstanceNorm in unittest

* add docstring and increase unittest coverage

* fix deconv_flops_counter_hook to accept different data shape

* test when model is not a common instance

* put flops_counter.py and weight_init.py into mmcv/cnn/utils folder

* fix import name

* reformat some docstrings

* update the scripts with latest one and remove redundant codes

* directly represent a model without string and eval()

* reformat code