ci: add lint workflow

[justlevine]

What

Adds a basic linting workflow

Why

Code quality is important for humans and bots. even in a POC.

Related Issue(s):

How

Testing Instructions

Screenshots

Additional Info

Checklist

• I have read the Contribution Guidelines.
• My code is tested to the best of my abilities.
• My code passes all lints (PHPCS, PHPStan, ESLint, etc).
• My code has detailed inline documentation.
• My code has automated tests to verify it works as intended.
• I have updated the relevant documentation (if any).

[Copilot]

Pull Request Overview

This PR adds a GitHub Actions workflow for code quality checks including linting, formatting, and type checking. It also excludes WordPress code from Prettier formatting since it's handled separately.

• Adds a comprehensive lint workflow with ESLint, Prettier, and TypeScript checks
• Configures the workflow to run on pull requests to main and develop branches
• Excludes WordPress directory from Prettier formatting

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.github/workflows/lint.yml	Adds new CI workflow with three jobs for linting, formatting, and type checking
.prettierignore	Excludes WordPress directory from Prettier formatting