[Feat] Return computed styles

[calebpeffer]

Problem Description
In certain circumstances, it's useful to grab computed styles from a page. Currently, this is impossible via fire crawl

Proposed Feature

Firecrawl returns a computed styles object when a parameter is passed

Alternatives Considered
Is there a way for us to pass through more p

Implementation Suggestions
Playwright has a "getComputedStyle" method https://developer.mozilla.org/en-US/docs/Web/API/Window/getComputedStyle. However, Idk if this would work without a traversal. There may be an easier way

Use Case
This would be useful for situations where the computed styles matter. Such as web agents or A/B testing tools

Additional Context

When complete, notify GB via slack @calebpeffer

[nickscamara]

Marking as blocked for now as not needed immediately.