nothings/stb ? reverse-engineered prompt

Build me a clean C and C++ library repo like stb, with a bunch of easy to drop in single file helpers for common things like loading and writing images, resizing images, reading fonts, dynamic arrays and hash tables, fast string formatting, Ogg Vorbis audio decoding, and a few other useful utilities for games and graphics work.

I want each library to be simple to include in one source file, with clear top of file instructions for how to turn on the implementation, and a README that explains what each piece does and when to use it. Please also add a few small tests or demos so I can see the libraries working right away, and make sure everything stays portable and easy to compile in a normal C or C++ project.

If you need to check current usage details or edge cases, look up the latest docs online.