Add Playwright Java oPack with OpenAF wrappers and add Maven dependency

[nmaguiar]

Motivation

• Provide a reusable OpenAF oPack that exposes Microsoft Playwright for Java to perform browser automation (navigation, screenshots, PDFs, script execution).
• Offer convenient integration points for OpenAF tooling via oafp input/output handlers and oJob wrappers to simplify common tasks.
• Ensure the project can fetch Playwright artifacts via Maven by declaring the dependency in the build pom.xml and including .maven.yaml metadata.

Description

• Added package metadata and packaging files: playwright/.package.yaml and playwright/.maven.yaml which declare the opack details and Maven coordinates (com.microsoft.playwright:playwright).
• Added documentation in playwright/README.md explaining install instructions, usage examples, oafp examples, and notes about browser binary downloads.
• Implemented the JavaScript wrapper playwright/playwright.js that creates and manages a Playwright instance and exposes run which supports url, engine, headless, timeout, waitForSelector, screenshotPath, pdfPath, and script execution, and handles cleanup of Playwright resources.
• Added OpenAF integration helpers playwright/oafp_playwright.js and job wrappers playwright/oJobPlaywright.yaml to provide oafp input/output formats and ojob shortcuts for page info and screenshots.
• Updated project pom.xml to include the Maven dependency com.microsoft.playwright:playwright:1.56.0 so the Playwright Java library can be resolved and loaded.

Testing

• No automated tests were executed for this change.