Unusable rust client

[tiago18c]

Problem

Rust client has a couple flaws:

• Generated header does not contain the 5 padding bytes and remaining data won't skip padding bytes either. Consumers need to know about the padding and manually skipping it.
• Generated client relies on hooked mod that is not exported, so rust clients can't craft initialize and write instructions.

[lorisleiva]

@febo Would you mind taking a look at this when you have a moment? 🙏