Add integration tests for C++ with clang & gcc

[sylvestre]

No description provided.

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: +0.11 🎉

Comparison is base (2013178) 29.61% compared to head (c69491c) 29.72%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1677      +/-   ##
==========================================
+ Coverage   29.61%   29.72%   +0.11%     
==========================================
  Files          49       49              
  Lines       17028    17028              
  Branches     8204     8204              
==========================================
+ Hits         5043     5062      +19     
+ Misses       6977     6975       -2     
+ Partials     5008     4991      -17     

see 13 files with indirect coverage changes

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[Xuanwo]

Thanks a lot, LGTM!