display frame stack information in detail Span.

[laixintao]

No description provided.

[codecov-commenter]

Codecov Report

Merging #59 (9e1f4b1) into main (0c22a39) will increase coverage by 0.21%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #59      +/-   ##
==========================================
+ Coverage   97.50%   97.72%   +0.21%     
==========================================
  Files          15       15              
  Lines        1001     1009       +8     
==========================================
+ Hits          976      986      +10     
+ Misses         25       23       -2     

Files	Coverage Δ
flameshow/pprof_parser/parser.py	98.51% <100.00%> (+1.02%)	⬆️
flameshow/render/app.py	93.51% <ø> (ø)
flameshow/render/framedetail.py	95.00% <100.00%> (+0.11%)	⬆️

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