Make AudioFile.h compatible with more compilation options.

[MatthieuHernandez]

Make AudioFile.h compatible with -Wall -Wextra -pedantic -Werror compilation options for GCC (And /W4 and /WX for MSVC).
This will make it easier project compatible with many projects.
You can use GitHub Actions to easly run tests on Linux, Windows and Mac.

[MatthieuHernandez]

I have this error : there are no arguments to ‘memcmp’ that depend on a template parameter, so a declaration of ‘memcmp’ must be available [-fpermissive]

[adamstark]

I am in the process of moving AudioFile to a CMake system with GitHub Actions testing. Once I've done that then it'd be a good time to look at the various compiler options to see if we can make it better for different platforms :)

[MatthieuHernandez]

Perfect thank you. 👍