Windows 10 1803 support?

Created by: woodruffw

Would work on Windows 1803 support be welcome? I'm not a Windows kernel person, but I should be able to mostly follow the work in #2698 (closed) and the updated syscall table here: https://github.com/tinysec/windows-syscall-table/blob/master/10.0.17134-sp0-windows-10-rs4-1803/ssdt.md.

I'll probably need some help with NtAllocateVirtualMemoryEx, since that probably needs to be intercepted like NtAllocateVirtualMemory currently is.