Add prettier to our linting rules

[cjcenizal]

We should also run autofix when we run the linter.

[chandlerprall]

Closing this issue. The design team is doing housekeeping against our issues and closing items without much recent activity. Feel free to reopen if you still have issues or feel this is in error.

[pugnascotia]

We ended up adding Prettier in #1529.