* c++: Add command line option to add extra includes to gen files
Fixes#5351
We have an ability to pass custom types for strings, allocators, etc
but have no way to tell the generator to include the classes in gen code
* c++: remove std::strtok for std::string methods. passes msvc compile
* generate_code.sh: add --cpp-includes to the test gen script
* tests:generate.bat: update code gen scripts w/ --cpp-includes
* cpp: use command line parsing for extra includes
s/--cpp-includes/--cpp-include/g
Simplify command line parsing of includes by using a std::vector.
* cpp: idl.h: move std::vector for cpp_includes as the last member
msvc does not understand initalization list on our CI server
* cpp:msvc: CI fails on for-range loops
* cpp:codegen: fix error reporting on flatcc
* as per code review: remove unwated --cpp-include in the
tests/generate_code.{sh,bat}