Add gasFeeEstimates for batch transactions

[vinistevam]

Explanation

This PR enhances TransactionBatchMeta by adding support for gasFeeEstimates and status.
When both useHook and requireApproval are true, the batch approval flow is triggered, and gasFeeEstimates are populated using the DefaultGasFeeFlow. These estimates are then passed along with the request to be consumed by the client.

Changes

• Extended TransactionBatchMeta to include:
  • gasFeeEstimates
  • status
• Introduced a new helper function: prepareApprovalData
  • Responsible for preparing approval data before creating the request

References

• Related to https://github.com/MetaMask/MetaMask-planning/issues/5006

Changelog

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed, highlighting breaking changes as necessary
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes

Applied all suggestions.