Feat/llm config (#724)

* feature: Add LlmConfig to easily configure and pass LLM configs to different strategies

* pulled in next branch and resolved conflicts

* feat: Add gemini and deepseek providers. Make ignore_cache in llm content filter to true by default to avoid confusions

* Refactor: Update LlmConfig in LLMExtractionStrategy class and deprecate old params

* updated tests, docs and readme

docs/examples/quickstart_sync.py

@@ -1,5 +1,6 @@
 import os
 import time
+from crawl4ai.async_configs import LlmConfig
 from crawl4ai.web_crawler import WebCrawler
 from crawl4ai.chunking_strategy import *
 from crawl4ai.extraction_strategy import *
@@ -178,7 +179,7 @@ def add_llm_extraction_strategy(crawler):
     result = crawler.run(
         url="https://www.nbcnews.com/business",
         extraction_strategy=LLMExtractionStrategy(
-            provider="openai/gpt-4o", api_token=os.getenv("OPENAI_API_KEY")
+            llmConfig =  LlmConfig(provider="openai/gpt-4o", api_token=os.getenv("OPENAI_API_KEY"))
         ),
     )
     cprint(
@@ -197,8 +198,7 @@ def add_llm_extraction_strategy(crawler):
     result = crawler.run(
         url="https://www.nbcnews.com/business",
         extraction_strategy=LLMExtractionStrategy(
-            provider="openai/gpt-4o",
-            api_token=os.getenv("OPENAI_API_KEY"),
+            llmConfig=LlmConfig(provider="openai/gpt-4o",api_token=os.getenv("OPENAI_API_KEY")),
             instruction="I am interested in only financial news",
         ),
     )
@@ -210,8 +210,7 @@ def add_llm_extraction_strategy(crawler):
     result = crawler.run(
         url="https://www.nbcnews.com/business",
         extraction_strategy=LLMExtractionStrategy(
-            provider="openai/gpt-4o",
-            api_token=os.getenv("OPENAI_API_KEY"),
+            llmConfig=LlmConfig(provider="openai/gpt-4o",api_token=os.getenv("OPENAI_API_KEY")),
             instruction="Extract only content related to technology",
         ),
     )