WIP: storm performance tracing

[invisig0th]

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[codecov]

Codecov Report

Attention: Patch coverage is 92.92929% with 7 lines in your changes missing coverage. Please review.

Project coverage is 97.62%. Comparing base (16ee721) to head (1dd8637).
Report is 1 commits behind head on master.

Files	Patch %	Lines
synapse/lib/ast.py	93.25%	6 Missing ⚠️
synapse/lib/node.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3821      +/-   ##
==========================================
- Coverage   97.73%   97.62%   -0.11%     
==========================================
  Files         239      239              
  Lines       51580    51671      +91     
==========================================
+ Hits        50412    50445      +33     
- Misses       1168     1226      +58     

Flag	Coverage Δ
linux	97.62% <92.92%> (-0.02%)	⬇️
linux_replay	?

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[Cisphyx]

I'm not sure this generator sandwich is quite coming out correctly, I think both the pre/post trace operations are happening after the oper is actually run.