Add header for files (#869)

* Add header for files

* Add header for files

* Add header for files

* Add header for files

tests/test_utils/test_points.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import numpy as np
 import pytest
 import torch

tests/test_utils/test_samplers.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import pytest
 import torch
 

tests/test_utils/test_utils.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import torch
 
 from mmdet3d.core import draw_heatmap_gaussian

tools/analysis_tools/analyze_logs.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import argparse
 import json
 import numpy as np

tools/analysis_tools/benchmark.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import argparse
 import time
 import torch

tools/analysis_tools/get_flops.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import argparse
 import torch
 from mmcv import Config, DictAction

tools/create_data.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import argparse
 from os import path as osp
 

tools/data_converter/__init__.py

+# Copyright (c) OpenMMLab. All rights reserved.

tools/data_converter/create_gt_database.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import mmcv
 import numpy as np
 import pickle

tools/data_converter/indoor_converter.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import mmcv
 import numpy as np
 import os

tools/data_converter/kitti_converter.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import mmcv
 import numpy as np
 from collections import OrderedDict

tools/data_converter/kitti_data_utils.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import numpy as np
 from collections import OrderedDict
 from concurrent import futures as futures

tools/data_converter/lyft_converter.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import mmcv
 import numpy as np
 import os

tools/data_converter/lyft_data_fixer.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import argparse
 import numpy as np
 import os

tools/data_converter/nuimage_converter.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import argparse
 import base64
 import mmcv

tools/data_converter/nuscenes_converter.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import mmcv
 import numpy as np
 import os

tools/data_converter/s3dis_data_utils.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import mmcv
 import numpy as np
 import os

tools/data_converter/scannet_data_utils.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import mmcv
 import numpy as np
 import os

tools/data_converter/sunrgbd_data_utils.py

+# Copyright (c) OpenMMLab. All rights reserved.
 import mmcv
 import numpy as np
 from concurrent import futures as futures

tools/data_converter/waymo_converter.py

+# Copyright (c) OpenMMLab. All rights reserved.
 r"""Adapted from `Waymo to KITTI converter
     <https://github.com/caizhongang/waymo_kitti_converter>`_.
 """