[NativeRustLibrary] support std::promise

Summary:
Context in ENG-6384

I tried to implement it using the template (std::promise<T>) but this complicates the code. I think we can assume the caller will handle it properly.

Test Plan:

1. Test both rejecting/resolving
2. I used one of existing methods and added sleep in Rust code to wait long enough and make sure it works

Reviewers: marcin, michal, varun

Reviewed By: varun

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D10613