feat(browser): add standalone CDP browser launch and lxml extraction strategy

Add new features to enhance browser automation and HTML extraction:
- Add CDP browser launch capability with customizable ports and profiles
- Implement JsonLxmlExtractionStrategy for faster HTML parsing
- Add CLI command 'crwl cdp' for launching standalone CDP browsers
- Support connecting to external CDP browsers via URL
- Optimize selector caching and context-sensitive queries

BREAKING CHANGE: LLMConfig import path changed from crawl4ai.types to crawl4ai

docs/examples/extraction_strategies_examples.py

@@ -11,7 +11,7 @@ import asyncio
 import os
 
 from crawl4ai import AsyncWebCrawler, BrowserConfig, CrawlerRunConfig, CacheMode
-from crawl4ai.types import LLMConfig
+from crawl4ai import LLMConfig
 from crawl4ai.extraction_strategy import (
     LLMExtractionStrategy,
     JsonCssExtractionStrategy,

docs/examples/llm_extraction_openai_pricing.py

@@ -1,4 +1,4 @@
-from crawl4ai.types import LLMConfig
+from crawl4ai import LLMConfig
 from crawl4ai import AsyncWebCrawler, LLMExtractionStrategy
 import asyncio
 import os

docs/examples/llm_markdown_generator.py

@@ -1,7 +1,7 @@
 import os
 import asyncio
 from crawl4ai import AsyncWebCrawler, BrowserConfig, CrawlerRunConfig, CacheMode
-from crawl4ai.types import LLMConfig
+from crawl4ai import LLMConfig
 from crawl4ai.content_filter_strategy import LLMContentFilter
 
 async def test_llm_filter():

docs/examples/quickstart_async.config.py

@@ -1,6 +1,6 @@
 import os, sys
 
-from crawl4ai.types import LLMConfig
+from crawl4ai import LLMConfig
 
 sys.path.append(
     os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

docs/examples/quickstart_async.py

@@ -1,6 +1,6 @@
 import os, sys
 
-from crawl4ai.types import LLMConfig
+from crawl4ai import LLMConfig
 
 # append parent directory to system path
 sys.path.append(

docs/examples/quickstart_sync.py

@@ -1,6 +1,6 @@
 import os
 import time
-from crawl4ai.types import LLMConfig
+from crawl4ai import LLMConfig
 from crawl4ai.web_crawler import WebCrawler
 from crawl4ai.chunking_strategy import *
 from crawl4ai.extraction_strategy import *

docs/examples/tutorial_v0.5.py

@@ -17,7 +17,7 @@ from crawl4ai.configs import ProxyConfig
 from crawl4ai import RoundRobinProxyStrategy
 from crawl4ai.content_filter_strategy import LLMContentFilter
 from crawl4ai import DefaultMarkdownGenerator
-from crawl4ai.types import LLMConfig
+from crawl4ai import LLMConfig
 from crawl4ai.extraction_strategy import JsonCssExtractionStrategy
 from crawl4ai.processors.pdf import PDFCrawlerStrategy, PDFContentScrapingStrategy
 from pprint import pprint