Prettier plugin architectural decisions

This is the home for decisions made about the prettier plugin's architecture.

Contributing a new decision

1. Copy docs/decisions/ADR_TEMPLATE.md to a new directory in the decisions directory, with a concise slug starting with the next sequential number, e.g. 003-using-vite/README.md.
2. Fill in the template.
3. Open a PR.
4. When it's approved, you can merge it.