rust: expose ffi

[lockbox]

the unicorn rust ffi is too high level for much customization, to enable an "opt-in" choice to more flexibility the ffi module should get re-exported public since there is no unicorn-sys create or equivalent etc.

[wtdcode]

Could you elaborate on your use case? I have the same thoughts for quite a long time.

[lockbox]

What i did in https://github.com/lockbox/unicorn was expose the ffi layer. this allows you to make your own callbacks and pass custom user data a la ffi::uc_hook_add. My use case is wrapping unicorn with some tlc.

[wtdcode]

Okay, make sense. I'm actually writing some raw wrapper for these but still WIP... Mark as enhancement.

[lockbox]

Cool! My changes I made work for me but are still a bit clunky. Looking forward to the changes

[lockbox]

Closed in #1847