Linux ARM64 support

[npXXX]

Hi there,

first I would like to thank you for this great library! I needed to simulate keypresses on a Raspberry Pi, but there was no ARM64 support, so I compiled the x11.os on a Pi 4, works just fine for me as a "drop-in replacement".

If someone else could need ARM64 support for linux, I would be happy to supply the compiled file.

If this is not needed, please just close this issue.