Use std::format from c++20

[nekiro]

Priority

Enhancement

Area

• Data
• Source
• Docker
• Other

What is missing?

I noticed the project still uses custom code to format prints (custom snprintf).
I believe it would be better to use what c++20 provides, so std::format directly.
It's easier to use, has auto casting via {} and probably way more features, not to mention it's in the standard and we can remove some custom code for free. Custom formatters for classes are also very nice.

Code of Conduct

• I agree to follow this project's Code of Conduct

[Zbizu]

looks like entire stdext namespace is no longer necessary