Component: Account and balance component

[blackdevelopa]

Development & PR Process

1. Follow MetaMask Mobile Coding Standards
2. Add release-xx label to identify the PR slated for a upcoming release (will be used in release discussion)
3. Add needs-dev-review label when work is completed
4. Add needs-qa label when dev review is completed
5. Add QA Passed label when QA has signed off

Description https://github.com/MetaMask/MetaMask-planning/issues/182

Screenshots/Recordings

Issue

Progresses https://github.com/MetaMask/MetaMask-planning/issues/182

Checklist

• [ ] There is a related GitHub issue
• [ ] Tests are included if applicable
• [ ] Any added code is fully documented

[github-actions[bot]]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.