Update lifespan setup

Author: marvinbuss

code/function/fastapp/main.py

@@ -6,7 +6,15 @@
 from fastapp.utils import setup_opentelemetry
 
 
-def get_app(lifespan) -> FastAPI:
+@asynccontextmanager
+async def lifespan(app: FastAPI) -> None:
+    """Gracefully start the application before the server reports readiness."""
+    setup_opentelemetry(app=app)
+    yield
+    pass
+
+
+def get_app() -> FastAPI:
     """Setup the Fast API server.
 
     RETURNS (FastAPI): The FastAPI object to start the server.
@@ -23,12 +31,4 @@ def get_app(lifespan) -> FastAPI:
     return app
 
 
-@asynccontextmanager
-async def lifespan(app: FastAPI) -> None:
-    """Gracefully start the application before the server reports readiness."""
-    setup_opentelemetry(app=app)
-    yield
-    pass
-
-
-app = get_app(lifespan=lifespan)
+app = get_app()