rust api

[Ipotrick]

We need...

Rust side types:

• [ ] FixedlList
• [ ] SmallString
• [ ] Optional
• [ ] Variant These types are our c api compatibility types. These c types should have a mirror type in rust just like in c++ (look at types.hpp). These types should be apbi compatible, meaning a simple transmute should always be enough to cast between them.

Refcounting Handles:

• the c api already provides refcounting functions.
• [ ] implement rust generic implementing the refcounting using the c functions
• [ ] implement wrapper functions for all the refcounted handles

Functions:

• not all functions info struct need to be abi compatible, use new types when convenient
• the Info structs should ALWAYS be abi compatible, never translate these types, a reinterpret cast of the reference should be enough
• orient yourself on the c and c++ api
• all c functions that may return errors should return a rust error enum