Use `zig cc` as another assembler

btw we moved to zig, both for cross-compiling (https://github.com/pwndbg/pwndbg/pull/2935, https://github.com/pwndbg/pwndbg/pull/3202) and cross-assembling (https://github.com/pwndbg/pwndbg/pull/3207), so we now include zig as a python package with pwndbg and don't need to worry about what toolchain the user has installed

maybe a similar approach would be neat for pwntools

_Ursprünglich gepostet von @k4lizen in https://github.com/Gallopsled/pwntools/pull/2612#issuecomment-3262284585_

I'd keep the binutils integration but have the zig solution as a fallback or additional option. This will make assembling on Windows less painful.