Add linting

[robertoaloi]

Let's introduce the Elvis linter, so we can start working with consistent style.

[jadeallenx]

I have no objection but aesthetically I don't care for the "comma first" list style.

[robertoaloi]

I'm used to it, but don't have strong feelings about it. Happy to use a formatter so style is not an issue.

[jadeallenx]

@robertoaloi can this be closed now?

[robertoaloi]

Indeed. Elvis is run as part of the CI pipeline.