nob_win64_mingw.c executable name variance.

[nezvers]

As my first experience with nob I tried building with Mingw64. I'm using the same version that came with Raylib installable setup.
I noticed that building stopped at compiling Raylib's *.os into an *.a and gave this error.

[INFO] CMD: x86_64-w64-mingw32-ar -crs ./build/raylib/win64-mingw/libraylib.a ./build/raylib/win64-mingw/rcore.o ./build/raylib/win64-mingw/raudio.o ./build/raylib/win64-mingw/rglfw.o ./build/raylib/win64-mingw/rmodels.o ./build/raylib/win64-mingw/rshapes.o ./build/raylib/win64-mingw/rtext.o ./build/raylib/win64-mingw/rtextures.o ./build/raylib/win64-mingw/utils.o
[ERROR] Could not create child process: 2

After checking content of my Mingw, I saw only x86_64-w64-mingw32-gcc-ar being the closest name.
Replaced here:

musializer/src_build/nob_win64_mingw.c

Line 135 in f106c92

nob_cmd_append(&cmd, "x86_64-w64-mingw32-ar", "-crs", libraylib_path);

After that everything worked.
Dunno, maybe there's a way to check it's name?

[Markos-Th09]

This was my bad and it was fixed in #99 but it wasn't been merged yet. Distribution of mingw for windows don't include all the prefixed binaries for some reason.