Change prettier configuration

[seratch]

This pull request changes the prettier configuration:

• consistently use 2 spaces for indentation like commonly done
• apply the formatter to config files too

Once #7 is merged, I will run npm run format and commit the changes to this PR.

[steven10a]

LGTM

[Copilot]

Pull Request Overview

This PR standardizes the Prettier configuration to align with common JavaScript/TypeScript formatting practices. The changes establish consistent formatting rules and expand the formatter scope to include configuration files.

• Updated Prettier configuration with standardized settings and added schema validation
• Expanded format command to include configuration files (JSON, JS, etc.) beyond just TypeScript source files
• Added .prettierignore file to exclude build artifacts and dependencies from formatting

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
package.json	Updated format script to include config files and various JS/TS extensions
.prettierrc	Reorganized config with schema, changed arrow parens to "always", and added endOfLine setting
.prettierignore	Added ignore patterns for build outputs and dependencies

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