Separate FFI from Alumet core #96
Description
What
Extract the FFI (which allows to define plugins as dynamic libraries) from the alumet crate to another one. Only keep the minimal amount of FFi-related features in the core.
Why
Many reasons:
- FFI is unstable and likely won't be stabilized soon, because no one needs it for now. Keeping it in the core prevents it from going to v1.0.0.
- Moving to a separate crate would give it an independent version number and pace.
- Easier to delegate the work to someone else, because it won't involve modifying the core.
- Easier to experiment new things related to FFI without breaking the core of Alumet.