[feat] otel support opentelemetry msg parts and tool_call

[JqRrt]

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Codecov Report

✅ All modified and coverable lines are covered by tests.

@@            Coverage Diff             @@
##             main     #438      +/-   ##
==========================================
+ Coverage   71.20%   72.89%   +1.68%     
==========================================
  Files         624      624              
  Lines       62055    62897     +842     
==========================================
+ Hits        44184    45846    +1662     
+ Misses      14679    13846     -833     
- Partials     3192     3205      +13     

Flag	Coverage Δ
unittests	72.89% <ø> (+1.68%)	⬆️

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