[Feature] Update hrnetv2 checkpoints on 300w/cofw/aflw

[jin-s13]

Motivation

Add some configs and checkpoints.

Modification

Fix errors in the result of aflw.

BC-breaking (Optional)

Use cases (Optional)

Checklist

Before PR:

• I have read and followed the workflow indicated in the CONTRIBUTING.md to create this PR.
• Pre-commit or linting tools indicated in CONTRIBUTING.md are used to fix the potential lint issues.
• Bug fixes are covered by unit tests, the case that causes the bug should be added in the unit tests.
• New functionalities are covered by complete unit tests. If not, please add more unit tests to ensure correctness.
• The documentation has been modified accordingly, including docstring or example tutorials.

After PR:

• CLA has been signed and all committers have signed the CLA in this PR.

[codecov]

Codecov Report

Merging #980 (544952d) into master (a0d513b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #980   +/-   ##
=======================================
  Coverage   82.82%   82.82%           
=======================================
  Files         189      189           
  Lines       14146    14146           
  Branches     2429     2429           
=======================================
  Hits        11716    11716           
  Misses       1816     1816           
  Partials      614      614           

Flag	Coverage Δ
unittests	82.75% <ø> (ø)

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