[Docs] Publish Code Style Guide

[brucearctor]

Description

It is great for a project to have consistent code formatting/style. This is often accomplished by a linting, and as part of pre-commit tests. But, it would also be helpful if a styleguide were published to make the choices/opinions explicit.

Are you sure this issue hasn't been raised already?

• [X] Yes

Have you read the Code of Conduct?

• [X] Yes