[New Snap] Skill Wallet

## 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/GainJar-Payroll/skillwallet-snap
- [x] Is the Snap distributed on [npm](https://www.npmjs.com/) and linked in this ticket? https://www.npmjs.com/package/@gainjar/skillwallet-snap
- [ ] Has an audit been performed and the audit report attached or linked in this issue? n/a
- [ ] 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 Skill Wallet Snap repository and its npm package. Then work through the checklist: obtain or link the audit, document vulnerabilities and resolutions, and identify the corresponding pull request in this registry. The issue is done when the audit evidence and decisions are documented and that pull request has been merged.

Written by the indexing model from the issue text.