chore: formatting with prettier

[trentm]

This is a look at switching to prettier for style (formatting) rather than standardjs.
This is broken into a few commits to help look at the changes:

1. Just the config changes (to cope with non-style linting diffs between standardjs and eslint:recommended).
2. Just the change to add semi-colons (changes most code lines).
3. A prettier config (small).
4. The prettier formatting config changes. This is the main commit to review: d794af8

[trentm]

Obsoleted by #3527