feat(tests): Enhance Playwright test suite (#231)

* feat(tests): Enhance Playwright test suite with comprehensive traffic simulations

- Added TypeScript support and updated dependencies in package.json.
- Introduced detailed test configurations for store admin and storefront.
- Created a structured test suite for traffic simulations, including:
  - Casual Browser tests simulating various shopper behaviors.
  - Malicious Buyer tests to validate security against common vulnerabilities.
  - Single Item Buyer tests for focused purchasing scenarios.
- Implemented retry logic for navigation and interactions to improve test reliability.
- Documented test categories and usage instructions in README files.
- Ensured graceful handling of non-existent products and malicious inputs.

* Update tests/traffic/single-item-buyer.spec.ts

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Copilot <[email protected]>

Author: usepowershell

.github/workflows/test-playwright.yaml

@@ -34,6 +34,7 @@ jobs:
         working-directory: tests
         env:
           PLAYWRIGHT_SERVICE_URL: ${{ secrets.PLAYWRIGHT_SERVICE_URL }}
-          STORE_ADMIN_URL: ${{ inputs.storeAdminUrl }}
-          STORE_FRONT_URL: ${{ inputs.storeFrontUrl }}
+          SERVICE_STORE_ADMIN_ENDPOINT_URL: ${{ inputs.storeAdminUrl }}
+          SERVICE_STORE_FRONT_ENDPOINT_URL: ${{ inputs.storeFrontUrl }}
+          COMPANY_NAME: 'Contoso'
           CI: true