[Feature] Support visualization for single gpu test

[ToumaKazusa3]

No description provided.

[codecov]

Codecov Report

Merging #216 (9c95278) into master (c89fe8e) will decrease coverage by 0.62%.
The diff coverage is 5.71%.

@@            Coverage Diff             @@
##           master     #216      +/-   ##
==========================================
- Coverage   70.05%   69.42%   -0.63%     
==========================================
  Files          87       87              
  Lines        4532     4563      +31     
  Branches      884      887       +3     
==========================================
- Hits         3175     3168       -7     
- Misses       1062     1099      +37     
- Partials      295      296       +1     

Flag	Coverage Δ
unittests	69.38% <5.71%> (-0.63%)	⬇️

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Impacted Files	Coverage Δ
mmtrack/models/mot/base.py	42.05% <0.00%> (-0.81%)	⬇️
mmtrack/models/sot/base.py	48.59% <0.00%> (-1.41%)	⬇️
mmtrack/models/vid/base.py	43.20% <ø> (ø)
mmtrack/apis/test.py	14.73% <7.40%> (-2.66%)	⬇️
mmtrack/datasets/pipelines/transforms.py	85.31% <0.00%> (-2.82%)	⬇️

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