Pre-commit hook or test for C++ code formatting?

[bpbond]

As noted here in #634 , we could enforce C++ coding style by either a pre-commit hook or a test.

Right now this seems like overkill, but opening this issue to track the idea after discussion with @kdorheim .

[bpbond]

https://datawookie.dev/blog/2022/09/enforcing-style-in-an-r-project/