GitLab

* update github action ci

* install torch in ci

* fix ci on win

* add __init__ in tests/utils

* add mmdet3d/testing for modeule importing in UT in win

* fix diff path sep on UT

* reduce RAM in voxel_generator

* reduce RAM in anchor_generator

* remove print in UT

* fix lint

* fix pvrcnn ut

* fix lint

* reduce channels in second_fpn

* add pvrcnn module code

* add voxelsa

* fix

* fix comments

* fix comments

* fix comments

* add stack sa

* fix

* fix comments

* fix comments

* fix

* add ut

* fix comments

* update data flow and ut

* update ut

* update code

* fix mapping bug

* fix comments

* fix cfg name

* update cfg name

* fix cfg

* fix comments

* fix comment

* fix comments