Differential fuzz tests executed on push/PR

[ ] Decoding results should be checked against OCaml implementation
[ ] Fuzzing should be run continuously
[ ] Fuzzing should be restarted with the new code base and existing corpus on a merge
[ ] Coverage reports should be generated periodically

OCaml implementation should be accessible via FFI (ideally) or IPC (currently implemented),

openmina / mina-p2p-messages-rs