add precision values to api schema

freqtrade/rpc/api_server/api_schemas.py

@@ -276,6 +276,10 @@ class TradeSchema(BaseModel):
     funding_fees: Optional[float]
     trading_mode: Optional[TradingMode]
 
+    amount_precision: Optional[float]
+    price_precision: Optional[float]
+    precision_mode: Optional[int]
+
 
 class OpenTradeSchema(TradeSchema):
     stoploss_current_dist: Optional[float]

tests/rpc/test_rpc_apiserver.py

@@ -1066,6 +1066,9 @@ def test_api_status(botclient, mocker, ticker, fee, markets, is_short,
         'liquidation_price': None,
         'funding_fees': None,
         'trading_mode': ANY,
+        'amount_precision': None,
+        'price_precision': None,
+        'precision_mode': None,
         'orders': [ANY],
     }
 
@@ -1271,6 +1274,9 @@ def test_api_force_entry(botclient, mocker, fee, endpoint):
         'liquidation_price': None,
         'funding_fees': None,
         'trading_mode': 'spot',
+        'amount_precision': None,
+        'price_precision': None,
+        'precision_mode': None,
         'orders': [],
     }