prettier

[msimerson]

• runs prettier against the repo
• this paves the way for a github action that automatically runs prettier against PRs, which:
  • makes it easier for PR authors
  • makes life easier for PR reviewers
• prettier has already been adopted in nearly-if-not-all haraka/* repos. Other than an occasional hiccup with markdown formatting, it's been nothing but aces.
• [x] Changes updated