Community: Updated Firecrawl Document Loader to v1 (#26548)

This PR updates the Firecrawl Document Loader to use the recently
released V1 API of Firecrawl.

**Key Updates:**

**Firecrawl V1 Integration:** Updated the document loader to leverage
the new Firecrawl V1 API for improved performance, reliability, and
developer experience.

**Map Functionality Added:** Introduced the map mode for more flexible
document loading options.

These updates enhance the integration and provide access to the latest
features of Firecrawl.

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Co-authored-by: Erick Friis <[email protected]>
Co-authored-by: Harrison Chase <[email protected]>