I think there may be room to expand this implementation to support such a use case. Right now it enforces an `.auto` layout of the struct provided in order to ensure alignment, but its easy to imagine supporting an `extern struct` with a defined layout.

Conceivably, an implementation of this `ResizableStruct` that uses an array buffer as backing rather than a heap allocation, and supports the defined layout of an extern struct, could be used to work across the ABI