Making VMOffsets accessible from the InstanceHandle

[Geal]

Hello! In my project, I have to rewrite parts of the VM context, and for that I use the wasm_vm::VMOffsets structure.
Right now, to access it, I write:

// with handle a &wasmer_vm::InstanceHandle
let module = handle.module_ref();
let vmoffsets = VMOffsets::new(std::mem::size_of::<*mut u8>() as u8, module);

Would it be possible to add a method to InstanceHandle so that it can directly return a VMOffsets that makes sense for it? Making sure that it has the same pointer size, etc.

[Hywan]

Sure, I think it's perfectly fine to add such feature. InstanceAllocator already has this API (which is private), so I guess it's fine to expose it publicly through InstanceHandle or even InstanceRef.

[Hywan]

Would #2040 solve your issue @Geal?

[Geal]

yes, thanks