add boilerplate for playwright e2e testing

[CollinBeczak]

Add Boilerplate for Playwright E2E Testing

This PR introduces the initial setup for Playwright end-to-end (E2E) testing.

Key Details

• Environment Configuration:

  • Requires .env.local to be set up with the following variables:
    • REACT_APP_BASE_URL – The URL of the app to test.
    • REACT_APP_USERNAME and REACT_APP_PASSWORD – Credentials for automated login.

• New Scripts in package.json:

  • test:e2e:start: Builds and serves the app for testing.
  • test:e2e: Runs Playwright tests in headless mode.
  • test:e2e:ui: Opens the Playwright test runner UI.
  • test:e2e:debug: Runs tests in debug mode.

Notes

• Tests rely on the local environment configuration similar to how frontend development is setup.
• Future improvements can expand test coverage and integrate tests into CI workflows.
• The login credentials need to be valid for the environment that the tests are being ran in.