add startup logs

server.py

@@ -42,14 +42,18 @@ class ML(BaseModel):
 
 
 def load_models(app: FastAPI) -> FastAPI:
+    logger.info("Loading embedding model...")
     retriever=BGEM3FlagModel('BAAI/bge-m3',  use_fp16=True) ,
+    logger.info("Loading ranker model...")
     ranker=FlagReranker('BAAI/bge-reranker-v2-m3', use_fp16=True)
+    logger.info("Done loading models!")
     ml = ML(
         retriever=retriever,
         ranker=ranker,
         data=get_data(retriever)
     )
     app.ml = ml
+    logger.info("Done with startup steps!")
     return app