Move ExitCheckTuple to enums

freqtrade/enums/__init__.py

@@ -1,6 +1,7 @@
 # flake8: noqa: F401
 from freqtrade.enums.backteststate import BacktestState
 from freqtrade.enums.candletype import CandleType
+from freqtrade.enums.exitchecktuple import ExitCheckTuple
 from freqtrade.enums.marginmode import MarginMode
 from freqtrade.enums.ordertypevalue import OrderTypeValues
 from freqtrade.enums.rpcmessagetype import RPCMessageType