Add max_drawdown_start and end to /profit API endpoints

freqtrade/rpc/api_server/api_schemas.py

@@ -141,6 +141,10 @@ class Profit(BaseModel):
     expectancy_ratio: float
     max_drawdown: float
     max_drawdown_abs: float
+    max_drawdown_start: str
+    max_drawdown_start_timestamp: int
+    max_drawdown_end: str
+    max_drawdown_end_timestamp: int
     trading_volume: Optional[float] = None
     bot_start_timestamp: int
     bot_start_date: str

tests/rpc/test_rpc_apiserver.py

@@ -977,6 +977,10 @@ def test_api_profit(botclient, mocker, ticker, fee, markets, is_short, expected)
         'expectancy_ratio': expected['expectancy_ratio'],
         'max_drawdown': ANY,
         'max_drawdown_abs': ANY,
+        'max_drawdown_start': ANY,
+        'max_drawdown_start_timestamp': ANY,
+        'max_drawdown_end': ANY,
+        'max_drawdown_end_timestamp': ANY,
         'trading_volume': expected['trading_volume'],
         'bot_start_timestamp': 0,
         'bot_start_date': '',