extract resolvers to IResolvers and it's own package

scripts/plot_dataframe.py

@@ -44,7 +44,7 @@ from freqtrade.arguments import Arguments, TimeRange
 from freqtrade.exchange import Exchange
 from freqtrade.optimize.backtesting import setup_configuration
 from freqtrade.persistence import Trade
-from freqtrade.strategy.resolver import StrategyResolver
+from freqtrade.resolvers import StrategyResolver
 
 logger = logging.getLogger(__name__)
 _CONF: Dict[str, Any] = {}

scripts/plot_profit.py

@@ -27,7 +27,7 @@ import plotly.graph_objs as go
 from freqtrade.arguments import Arguments
 from freqtrade.configuration import Configuration
 from freqtrade import constants
-from freqtrade.strategy.resolver import StrategyResolver
+from freqtrade.resolvers import StrategyResolver
 import freqtrade.optimize as optimize
 import freqtrade.misc as misc