Bump requested C++ standard version to C++17

[andrea-iob]

It's 2024, C++17 seems the bare minimum.

[marcocisternino]

https://en.cppreference.com/w/cpp/17
gcc 8.5.0 is not considered as stable as gcc 9 about c++17, but from the reference above the language core and the most of the lib features should be supported (excluding parallel algo and exec policies, Hardware interference size and polymorphic memory resources, Major portion of C11 standard library and DR17 std::filesystem::path)

[marcocisternino]

I added:

• a binary utils write for non-const char*
• c++17 requirement for tests and examples