feat: implements `irn_batchFetchMessages`

[ganchoradkov]

Description

Implemented irn_batchFetchMessages that is called before subscribing to topics so we can sort all pending messages from the mailbox and avoid out of sync messages and improve consistency in handling when a peer comes online and receives bunch of mailbox messages

Type of change

• [ ] Chore (non-breaking change that addresses non-functional tasks, maintenance, or code quality improvements)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Draft PR (breaking/non-breaking change which needs more work for having a proper functionality [Mark this PR as ready to review only when completely ready])
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

How has this been tested?

this test covers exactly this scenario https://github.com/WalletConnect/walletconnect-monorepo/blob/v2.0/packages/web3wallet/test/sign.spec.ts#L142

Checklist

• [ ] I have performed a self-review of my own code
• [ ] My changes generate no new warnings
• [ ] Any dependent changes have been merged and published in downstream modules

Additional Information (Optional)

Please include any additional information that may be useful for the reviewer.

[ganchoradkov]

waiting on https://github.com/WalletConnect/walletconnect-utils/pull/170 to be merged/release so I can bump versions in this PR

[bkrem]

waiting on WalletConnect/walletconnect-utils#170 to be merged/release so I can bump versions in this PR

Approved ✅