support c++20 and later standards

Failed to build `develop` branch with c++20 standard in visual studio2022 using cmake:

In the top-most CMakeLists.txt
```
set(CMAKE_C_STANDARD 17)
set(CMAKE_C_EXTENSIONS OFF)
set(CMAKE_C_STANDARD_REQUIRED ON)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
```