Replaced adhoc build of reply with helpers

[JohanMabille]

Foollow up of #453

[codecov-commenter]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 80.28%. Comparing base (ff0a307) to head (807512d).

Files with missing lines	Patch %	Lines
src/xinspect.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #457      +/-   ##
==========================================
- Coverage   80.67%   80.28%   -0.40%     
==========================================
  Files          21       21              
  Lines         859      847      -12     
  Branches       78       78              
==========================================
- Hits          693      680      -13     
- Misses        166      167       +1     

Files with missing lines	Coverage Δ
src/xinterpreter.cpp	88.07% <100.00%> (-0.95%)	⬇️
src/xinspect.cpp	91.89% <0.00%> (-0.84%)	⬇️

Files with missing lines	Coverage Δ
src/xinterpreter.cpp	88.07% <100.00%> (-0.95%)	⬇️
src/xinspect.cpp	91.89% <0.00%> (-0.84%)	⬇️

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[github-actions]

clang-tidy made some suggestions

[anutosh491]

Looks good. I always end up thinking if we could somehow mention both C++ & C in the language_info:name field but it's okay 😅