Run the code formatter across the whole repo.

[ChrisJohnNOAA]

Description

Run the Google style formatter on everything. This has no other changes (except a readme update on how to run the formatter). The goal is to make future code reviews easier with everything using a standard format.

Checklist before requesting a review

• [ X ] I have performed a self-review of my code
• [ X ] My code follows the style guidelines of this project
• [ X ] I have commented my code, particularly in hard-to-understand areas
• [ X ] I have made corresponding changes to the documentation
• [ X ] My changes generate no new warnings
• [ X ] I have added tests that prove my fix is effective or that my feature works
• [ X ] New and existing unit tests pass locally with my changes