Add Firecrawl integration (#402)

* Add Firecrawl integration page

* Update Firecrawl integration documentation to include a link to the FirecrawlCrawler component and remove unnecessary warm-up calls in examples.

Author: bogdankostic

integrations/firecrawl.md

@@ -0,0 +1,96 @@
+---
+layout: integration
+name: Firecrawl
+description: Crawl websites and extract LLM-ready content using Firecrawl
+authors:
+    - name: deepset
+      socials:
+        github: deepset-ai
+        twitter: deepset_ai
+        linkedin: https://www.linkedin.com/company/deepset-ai/
+pypi: https://pypi.org/project/firecrawl-haystack
+repo: https://github.com/deepset-ai/haystack-core-integrations
+type: Data Ingestion
+report_issue: https://github.com/deepset-ai/haystack-core-integrations/issues
+logo: /logos/firecrawl.png
+version: Haystack 2.0
+toc: true
+---
+
+### Table of Contents
+
+- [Overview](#overview)
+- [Installation](#installation)
+- [Usage](#usage)
+- [License](#license)
+
+## Overview
+
+[Firecrawl](https://firecrawl.dev) turns websites into LLM-ready data. It handles JavaScript rendering, anti-bot bypassing, and outputs clean Markdown. 
+
+This integration provides a [`FirecrawlCrawler`](https://docs.haystack.deepset.ai/docs/firecrawlcrawler) component that crawls one or more URLs and returns the content as Haystack `Document` objects. Crawling starts from each given URL and follows links to discover subpages, up to a configurable limit.
+
+You need a Firecrawl API key to use this integration. You can get one at [firecrawl.dev](https://firecrawl.dev).
+
+## Installation
+
+```bash
+pip install firecrawl-haystack
+```
+
+## Usage
+
+### Components
+
+This integration provides the following component:
+
+- **`FirecrawlCrawler`**: Crawls URLs and their subpages, returning extracted content as Haystack Documents.
+
+### Basic Example
+
+```python
+from haystack_integrations.components.fetchers.firecrawl import FirecrawlCrawler
+
+crawler = FirecrawlCrawler(params={"limit": 5})
+
+result = crawler.run(urls=["https://docs.haystack.deepset.ai/docs/intro"])
+documents = result["documents"]
+```
+
+By default, the component reads the API key from the `FIRECRAWL_API_KEY` environment variable. You can also pass it explicitly:
+
+```python
+from haystack.utils import Secret
+from haystack_integrations.components.fetchers.firecrawl import FirecrawlCrawler
+
+crawler = FirecrawlCrawler(
+    api_key=Secret.from_token("your-api-key"),
+    params={"limit": 10, "scrape_options": {"formats": ["markdown"]}},
+)
+```
+
+### Parameters
+
+- **`api_key`**: API key for Firecrawl. Defaults to the `FIRECRAWL_API_KEY` environment variable.
+- **`params`**: Parameters for the crawl request. Defaults to `{"limit": 1, "scrape_options": {"formats": ["markdown"]}}`. See the [Firecrawl API reference](https://docs.firecrawl.dev/api-reference/endpoint/crawl-post) for all available parameters. Without a limit, Firecrawl may crawl all subpages and consume credits quickly.
+
+### Async Support
+
+The component supports asynchronous execution via `run_async`:
+
+```python
+import asyncio
+from haystack_integrations.components.fetchers.firecrawl import FirecrawlCrawler
+
+async def main():
+    crawler = FirecrawlCrawler(params={"limit": 5})
+    
+    result = await crawler.run_async(urls=["https://docs.haystack.deepset.ai/docs/intro"])
+    print(f"Crawled {len(result['documents'])} documents")
+
+asyncio.run(main())
+```
+
+### License
+
+`firecrawl-haystack` is distributed under the terms of the [Apache-2.0](https://spdx.org/licenses/Apache-2.0.html) license.