feat: add support for eth_accounts to provider

[moldy530]

Pull Request Checklist

• Did you add new tests and confirm existing tests pass? (yarn test)
• Did you update relevant docs? (docs are found in the site folder, and guidelines for updating/adding docs can be found in the contribution guide)
• Do your commits follow the Conventional Commits standard?
• Does your PR title also follow the Conventional Commits standard?
• If you have a breaking change, is it correctly reflected in your commit message? (e.g. feat!: breaking change)
• Did you run lint (yarn lint:check) and fix any issues? (yarn lint:write)
• Did you follow the contribution guidelines?

---

PR-Codex overview

This PR focuses on adding support for the eth_accounts method in the smartAccountClient.ts file.

Detailed summary

• Added support for the eth_accounts method
• Returns the client's account address if available
• Throws an AccountNotFoundError if the client's account is not available

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
aa-sdk-site	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 1, 2024 7:16pm
aa-sdk-ui-demo	❌ Failed (Inspect)			Aug 1, 2024 7:16pm