[Feature] Add HVU datatools

[kennymckormick]

HVU datatools. Last PR mess up after rebasing master.

[dreamerlin]

Need to update changelog.md

[codecov]

Codecov Report

Merging #227 into master will increase coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #227      +/-   ##
==========================================
+ Coverage   84.98%   85.05%   +0.07%     
==========================================
  Files          81       81              
  Lines        5267     5267              
  Branches      846      846              
==========================================
+ Hits         4476     4480       +4     
+ Misses        649      646       -3     
+ Partials      142      141       -1     

Flag	Coverage Δ
#unittests	85.05% <ø> (+0.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmaction/datasets/pipelines/augmentations.py	94.96% <0.00%> (+0.77%)	⬆️

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