make grpc receive/send msg size configurable

[Besroy]

related sisl change: eBay/sisl#265

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 92.30769% with 1 line in your changes missing coverage. Please review.

Project coverage is 71.49%. Comparing base (0262682) to head (a068d09).
Report is 55 commits behind head on main.

Files with missing lines	Patch %	Lines
src/proto/proto_mesg_factory.cpp	90.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #124      +/-   ##
==========================================
+ Coverage   71.47%   71.49%   +0.01%     
==========================================
  Files          21       20       -1     
  Lines         887      898      +11     
  Branches      103      103              
==========================================
+ Hits          634      642       +8     
- Misses        188      189       +1     
- Partials       65       67       +2     

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