[Feature] Adding PWC metafile

[wHao-Wu]

• Adding PWC metafile in each model

[codecov]

Codecov Report

Merging #485 (2bc2cef) into master (6942cf9) will decrease coverage by 0.40%.
The diff coverage is n/a.

❗ Current head 2bc2cef differs from pull request most recent head f97a82a. Consider uploading reports for the commit f97a82a to get more accurate results

@@            Coverage Diff             @@
##           master     #485      +/-   ##
==========================================
- Coverage   51.05%   50.65%   -0.41%     
==========================================
  Files         187      191       +4     
  Lines       13799    14452     +653     
  Branches     2238     2366     +128     
==========================================
+ Hits         7045     7320     +275     
- Misses       6277     6640     +363     
- Partials      477      492      +15     

Flag	Coverage Δ
unittests	50.65% <ø> (-0.41%)	⬇️

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Impacted Files	Coverage Δ
mmdet3d/datasets/__init__.py	100.00% <0.00%> (ø)
mmdet3d/datasets/custom_3d_seg.py	65.66% <0.00%> (ø)
mmdet3d/models/dense_heads/__init__.py	100.00% <0.00%> (ø)
...et3d/models/dense_heads/anchor_free_mono3d_head.py	68.58% <0.00%> (ø)
mmdet3d/models/dense_heads/fcos_mono3d_head.py	13.10% <0.00%> (ø)
mmdet3d/datasets/s3dis_dataset.py	90.69% <0.00%> (ø)
...det3d/models/dense_heads/base_mono3d_dense_head.py	42.10% <0.00%> (ø)
mmdet3d/datasets/pipelines/transforms_3d.py	86.92% <0.00%> (+0.43%)	⬆️
mmdet3d/datasets/pipelines/loading.py	85.03% <0.00%> (+1.21%)	⬆️
mmdet3d/models/detectors/fcos_mono3d.py	100.00% <0.00%> (+16.66%)	⬆️

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[Tai-Wang]

Is focal loss also used in other models?

[Tai-Wang]

Whether the loss should be regarded as a part of architecture?

[ZwwWayne]

Can omit Focal Loss and SECOND.

[wHao-Wu]

Yes, sir. Please refer to metafile in fp16, free_anchor, imvotenet, mvxnet, parta2, pointpillars, regnet, second and ssn. Due to the high frequency, I thought focal loss is a common architecture and is written into metafile.

[wHao-Wu]

Thanks for your advice. I have updated the metafiles.