Add .clang-format config for include orders

[arukuka]

Summary

• Add configuration in .clang-format for include orders
  • IncludeBlocks: Preserve

Purpose

Without added IncludeBlocks: Preserve config, we will get include orders that go against Google C++ Style.

exmaple

If the source code we are editing is example.cpp,

• original

  #include "exmaple.hpp"
  
  #include <iostream>
  #include <atomic>
  
  #include <boost/uuid/uuid.hpp>
  
  #include "projects/other/header.hpp"

• clang-format applied with current .clang-format

  #include "exmaple.hpp"
  
  #include <atomic>
  #include <boost/uuid/uuid.hpp>
  #include <iostream>
  
  #include "projects/other/header.hpp"

• Following Google C++ style

  #include "exmaple.hpp"
  
  #include <atomic>
  #include <iostream>
  
  #include <boost/uuid/uuid.hpp>
  
  #include "projects/other/header.hpp"

  • I think that it is desired result
  • this patch will take this result

notation

When this patch is applied, separating include blocks will require human effort.

Contents

• c153925 add .clang-format config

Testing Methods Performed

• run clang-format