Read funding_fee on order objects in "from_json"

freqtrade/persistence/trade_model.py

@@ -1817,6 +1817,7 @@ class Trade(ModelBase, LocalTrade):
                 price=order["price"],
                 ft_price=order["price"],
                 remaining=order["remaining"],
+                funding_fee=order.get("funding_fee", None),
             )
             trade.orders.append(order_obj)
 

tests/persistence/test_trade_fromjson.py

@@ -170,7 +170,8 @@ def test_trade_fromjson():
                 "order_filled_date": "2022-10-18 09:45:22",
                 "order_type": "market",
                 "price": 0.2592,
-                "remaining": 0.0
+                "remaining": 0.0,
+                "funding_fee": -0.055
             }
         ]
     }"""
@@ -192,3 +193,4 @@ def test_trade_fromjson():
     last_o = trade.orders[-1]
     assert last_o.order_filled_utc == datetime(2022, 10, 18, 9, 45, 22, tzinfo=timezone.utc)
     assert isinstance(last_o.order_date, datetime)
+    assert last_o.funding_fee == -0.055