GitLab

* add h3d head

* add h3d roi head

* update docstring of h3d roi head

* reconstruct h3d head

* remove unused code

* modify h3d bbox head

* add h3dnet init files

* modify h3d bbox head

* add depth_box3d unittest

* update h3d head

* add h3dnet benchmark

* update docstring in vote_head

* resovle primitive conflict

Update mmdet3d/core/bbox/structures/base_box3d.py, mmdet3d/core/bbox/structures/lidar_box3d.py, mmdet3d/core/post_processing/box3d_nms.py files

Update mmdet3d/models/dense_heads/anchor3d_head.py, mmdet3d/models/dense_heads/free_anchor3d_head.py, mmdet3d/models/dense_heads/parta2_rpn_head.py, mmdet3d/models/dense_heads/train_mixins.py, mmdet3d/models/dense_heads/vote_head.py, mmdet3d/models/roi_heads/bbox_heads/parta2_bbox_head.py, mmdet3d/models/roi_heads/mask_heads/pointwise_semantic_head.py, mmdet3d/models/roi_heads/roi_extractors/single_roiaware_extractor.py, mmdet3d/models/roi_heads/base_3droi_head.py, mmdet3d/models/roi_heads/part_aggregation_roi_head.py files