Place test order in create order api call

app/api.py

@@ -6,6 +6,7 @@ from pydantic import BaseModel, Field, condecimal, conint, constr, root_validato
 from app.types import Order, OrderSide, OrderType
 
 from datetime import datetime
+from app.stock_exchange import place_order
 
 app = FastAPI()
 
@@ -41,6 +42,7 @@ class CreateOrderResponseModel(Order):
     response_model_by_alias=True,
 )
 async def create_order(model: CreateOrderModel):
+    place_order(model)
     return CreateOrderResponseModel(
         id=1,
         created_at=datetime.now(),