Move hyperopt-loss functions to their own package

freqtrade/resolvers/hyperopt_resolver.py

@@ -23,7 +23,7 @@ class HyperOptLossResolver(IResolver):
     object_type = IHyperOptLoss
     object_type_str = "HyperoptLoss"
     user_subdir = USERPATH_HYPEROPTS
-    initial_search_path = Path(__file__).parent.parent.joinpath('optimize').resolve()
+    initial_search_path = Path(__file__).parent.parent.joinpath('optimize/hyperopt_loss').resolve()
 
     @staticmethod
     def load_hyperoptloss(config: Dict) -> IHyperOptLoss:

tests/optimize/test_hyperoptloss.py

@@ -4,7 +4,7 @@ from unittest.mock import MagicMock
 import pytest
 
 from freqtrade.exceptions import OperationalException
-from freqtrade.optimize.hyperopt_loss_short_trade_dur import ShortTradeDurHyperOptLoss
+from freqtrade.optimize.hyperopt_loss.hyperopt_loss_short_trade_dur import ShortTradeDurHyperOptLoss
 from freqtrade.resolvers.hyperopt_resolver import HyperOptLossResolver