feat:export pc barplot

[anyangml]

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[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 64.27%. Comparing base (22a1602) to head (1f20803).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
lambench/metrics/visualization.py	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #414      +/-   ##
==========================================
- Coverage   64.42%   64.27%   -0.16%     
==========================================
  Files          35       35              
  Lines        1653     1657       +4     
  Branches      205      205              
==========================================
  Hits         1065     1065              
- Misses        544      548       +4     
  Partials       44       44              

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