chore: add prettier conf

[Pagebakers]

Description of change

Pull-Request Checklist

• [x] Code is up-to-date with the main branch
• [x] pnpm lint passes with this change
• [x] This pull request links relevant issues as Fixes #0000
• [x] Documentation has been updated to reflect this change
• [x] The new commits follow conventions outlined in the conventional commit spec

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Name	Status	Preview	Updated
bouncer-api	✅ Ready (Inspect)	Visit Preview	Nov 20, 2022 at 10:51AM (UTC)

[what-the-diff[bot]]

• Update bouncer-core, bouncer-planetscale and bouncer-sql to 0.7.1
• Add .prettierrc file with prettier configs