Add modelopt agent protocols including shared schemas with bigpareto and quant_flow

[Edwardf0t1]

…nd quant_flow

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.70%. Comparing base (b49f9b9) to head (112650b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1549   +/-   ##
=======================================
  Coverage   76.70%   76.70%           
=======================================
  Files         477      477           
  Lines       51977    51977           
=======================================
+ Hits        39868    39869    +1     
+ Misses      12109    12108    -1     

Flag	Coverage Δ
unit	52.75% <ø> (-0.01%)	⬇️

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