refactor(llm): rename LlmConfig to LLMConfig for consistency

Rename LlmConfig to LLMConfig across the codebase to follow consistent naming conventions.
Update all imports and usages to use the new name.
Update documentation and examples to reflect the change.

BREAKING CHANGE: LlmConfig has been renamed to LLMConfig. Users need to update their imports and usage.

crawl4ai/cli.py

@@ -1,9 +1,7 @@
 import click
 import os
 import time
-import datetime
-import sys
-import shutil
+
 import humanize
 from typing import Dict, Any, Optional, List
 import json
@@ -13,7 +11,6 @@ from rich.console import Console
 from rich.table import Table
 from rich.panel import Panel
 from rich.prompt import Prompt, Confirm
-from rich.style import Style
 
 from crawl4ai import (
     CacheMode,
@@ -26,12 +23,12 @@ from crawl4ai import (
     JsonXPathExtractionStrategy,
     BM25ContentFilter, 
     PruningContentFilter,
-    BrowserProfiler
+    BrowserProfiler,
+    LLMConfig
 )
 from litellm import completion
 from pathlib import Path
 
-from crawl4ai.async_configs import LlmConfig
 
 # Initialize rich console
 console = Console()
@@ -647,7 +644,7 @@ def crawl_cmd(url: str, browser_config: str, crawler_config: str, filter_config:
                     raise click.ClickException("LLM provider and API token are required for LLM extraction")
 
                 crawler_cfg.extraction_strategy = LLMExtractionStrategy(
-                    llmConfig=LlmConfig(provider=extract_conf["provider"], api_token=extract_conf["api_token"]),
+                    llm_config=LLMConfig(provider=extract_conf["provider"], api_token=extract_conf["api_token"]),
                     instruction=extract_conf["instruction"],
                     schema=schema_data,
                     **extract_conf.get("params", {})