feat: 1. replace black with ruff for fomatting and sort import (#489)

2. use tavily from`langchain-tavily` rather than the older one from `langchain-community`

Co-authored-by: Willem Jiang <willem.jiang@gmail.com>

src/config/configuration.py

@@ -8,8 +8,8 @@ from typing import Any, Optional
 
 from langchain_core.runnables import RunnableConfig
 
-from src.rag.retriever import Resource
 from src.config.report_style import ReportStyle
+from src.rag.retriever import Resource
 
 logger = logging.getLogger(__name__)