SIP macOS - add fallback to arm64

[aviramha]

Currently we extract x64 binary but sometimes arm64 is available so we can avoid emulation. In this case we should extract the arm64 binary and patch it.

[t4lz]

Almost done, just one concern, @aviramha:
Isn't it possible that there are going to be fat binaries with arm64 binaries included in them, on macs with intel chips?
In that case, if we prefer the arm64 binaries over the x64 binaries and use them, the patched arm64 binary is not going to be able to run on the intel x64 mac, is it?

Should we choose the binary according to the system's architecture?

[aviramha]

Almost done, just one concern, @aviramha: Isn't it possible that there are going to be fat binaries with arm64 binaries included in them, on macs with intel chips? In that case, if we prefer the arm64 binaries over the x64 binaries and use them, the patched arm64 binary is not going to be able to run on the intel x64 mac, is it?

Should we choose the binary according to the system's architecture?

That's correct.. That should be probably done in compile time, no?