Create an introduction to code reviews explaining further the purpose of a code review

[cloudappsguy]

Description

This PR adds new content to further enhance and describe the purpose and approach to code reviews.

PR Checklist

• [x] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.
• [ ] My code follows the code style of this project.
• [ ] I ran the lint checks which produced no new errors nor warnings for my changes.
• [x] I have checked to ensure there aren't other open Pull Requests for the same update/change.

Does this introduce a breaking change?

• [ ] Yes
• [X] No

Testing

N/A

Any relevant logs or outputs

N/A

Other information or known dependencies

N/A

[cloudappsguy]

PR not ready for MSFT merge. Revoking PR request.