[New Snap] Reef Wallet

Nobody has claimed this yet.

## Checklist

All items in the list below needs to be satisfied.

- [x] Is the Snap repository publicly accessible and linked in this ticket: https://github.com/reef-chain/metamask-snap
- [x] Is the Snap distributed on [npm](https://www.npmjs.com/) and linked in this ticket: https://www.npmjs.com/package/@reef-chain/reef-snap
- [ ] Has an audit been performed and the audit report attached or linked in this issue: no audit required as per our requirements. but they do derive keys so we need to ensure that they provide ways for users to recover them.
- [ ] Is a complete list of discovered vulnerabilities from the audit documented in this issue?
- [ ] For vulnerabilities that have been deemed necessary to be addressed, are the links to the fixes attached to this issue?
- [ ] For vulnerabilities that have been deemed not necessary to be addressed, is a reason for each of them documented in this issue?
- [ ] The corresponding pull request in this repo has been merged.

Start by reviewing the linked Snap repository at https://github.com/reef-chain/metamask-snap and its npm package, then compare them with every checklist item. Done means the key-recovery requirement and audit-status rationale are documented, any required vulnerability links are included, and the corresponding pull request in this repository is merged.

Written by the indexing model from the issue text.