cmake ENTT_HAS_HEADER_VERSION examples

Dreamtowards/Ethertia lib/entt-3.12.2/test/CMakeLists.txt :8 

check_cxx_source_compiles("
    #include<version>
    int main() { return 0; }
" ENTT_HAS_HEADER_VERSION)

Dreamtowards/Ethertia lib/entt-3.12.2/test/CMakeLists.txt :91 

target_compile_definitions(
            ${TARGET_NAME}
            PRIVATE
                ENTT_HAS_HEADER_VERSION
        )

Dreamtowards/Ethertia lib/_misc/entt/test/CMakeLists.txt :8 

check_cxx_source_compiles("
    #include<version>
    int main() { return 0; }
" ENTT_HAS_HEADER_VERSION)

Dreamtowards/Ethertia lib/_misc/entt/test/CMakeLists.txt :91 

target_compile_definitions(
            ${TARGET_NAME}
            PRIVATE
                ENTT_HAS_HEADER_VERSION
        )