check_cxx_feature_supported added
C++20 added new feature test macros support. This PR adds a module that checks if a specific feature expressed by a condition
parameter is supported. Most of the code is taken from CheckSymbolExists.
C++20 added new feature test macros support. This PR adds a module that checks if a specific feature expressed by a condition
parameter is supported. Most of the code is taken from CheckSymbolExists.