L1VM - ports status

Here I want to show how the L1VM status is on different OS. As I work on a Linux machine, Linux is the best supported OS to run L1VM on it!

Here is a ranking from top to not so well:

1. Linux: Debian, Debian on Raspberry Pi, Fedora, Ubuntu (GitHub CI), Windows WSL (Debian)
2. BSD UNIX: OpenBSD, FreeBSD, Dragonfly BSD
3. Haiku OS: (Multithreading using POSIX threads don't work at all. Maybe this will be fixed in later Haiku versions.)
4. Windows: via MSYS2, Cygwin
5. macOS: via GitHub CI.

Finally the macOS GitHub CI build seems to work again. I had to copy endian.h to /usr/local/include to make it usable by SDL:

# macOS 13 build
cp /Library/Developer/CommandLineTools/SDKs/MacOSX13.3.sdk/usr/include/machine/endian.h /usr/local/include
cp /usr/local/include/c++/11/parallel/features.h /usr/local/include

Now the L1VM should build on macOS again. Sorry for this!