[Playwright JS] Auto viewport sizing for playwright

[omacranger]

Description

Adds an option to resize the viewport when taking a screenshot by using the screenshotOptions.autoSizeViewport option in sauceVisualCheck. This option resizes the viewport to match the document or body scroll height before capturing to prevent scroll+stitch artifacts present in the default full page capture.

Example:

await sauceVisual.visualCheck("Inventory Page", {
    screenshotOptions: {
        autoSizeViewport: true,
    }
});

Types of Changes

What types of changes does your code introduce? Keep the ones that apply:

• New feature (non-breaking change which adds functionality)
• Configuration change