chore: add prettier to CI and project configuration

[raybell-md]

Closes #180

I used Gemini CLI to make the changes here https://github.com/google-gemini/gemini-cli/blob/main/.github/workflows/ci.yml#L104

[gemini-code-assist]

Summary of Changes

Hello @raybell-md, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request integrates Prettier into the project to enforce consistent code styling across the codebase. It sets up the necessary configuration files, adds Prettier as a development dependency, and provides convenient npm scripts for checking and automatically fixing formatting issues. This change aims to improve code readability and maintainability by standardizing the code style.

Highlights

• Prettier Configuration: New .prettierignore and .prettierrc.json files are added to define formatting rules and specify paths to be ignored by Prettier.
• Dependency Addition: Prettier is added as a development dependency in package.json and package-lock.json to enable consistent code formatting.
• NPM Scripts: New format:check and format:fix scripts are introduced in package.json to facilitate checking and automatically fixing code formatting issues.

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Ignored Files

• Ignored by pattern: .github/workflows/** (1)
  • .github/workflows/ci.yml

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[gemini-code-assist]

Code Review

This pull request introduces Prettier to the project for consistent code formatting, which is a great addition for maintainability. The changes include adding the necessary configuration files, package dependencies, and scripts. My review includes a minor suggestion to simplify the Prettier configuration.

[allenhutchison]

thanks for adding the format checking. I had to run prettier to ensure that the new tests would pass, so that added a lot of changes to the PR. I also extracted the static tests from the unit test matrix so that they only run once instead of 9 times.