GitLab

* support fast eval on waymo

* support waymo evaluatioin more flexible and faster

* support waymo evaluatioin more flexible and faster

* renames

* add docs

* add guides for multi-thread evaluation toolkit

* fix docstring

* add download link for idx2metainfo

* add docstring

* set convert_kitti_format=False in Lidar-based methods

* fix docs

* add docstring

* Fixed missing __init__ files
Co-authored-by: Tai-Wang <tab_wang@outlook.com>