refactor: raise NotImplementedError in abstract method (#75)

Abstract methods should raise `NotImplementeError` when they require derived classes to override the method, or while the class is being developed to indicate that the real implementation still needs to be added.

Co-authored-by: deepsource-autofix[bot] <62050782+deepsource-autofix[bot]@users.noreply.github.com>

martin_binance/strategy_base.py

@@ -1638,71 +1638,71 @@ async def main(self, _symbol):
     # region AbstractMethod
     @abstractmethod
     def restore_state_before_backtesting_ex(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def save_strategy_state(self, *args, **kwargs):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def stop(self):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_new_funds(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_cancel_order_error_string(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_cancel_order_success(self, *args, **kwargs):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_place_order_error(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_place_order_success(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_balance_update_ex(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_order_update_ex(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_new_ticker(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def get_sum_profit(self):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def get_free_assets(self, *args, **kwargs):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def on_new_order_book(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def restore_strategy_state(self, *args, **kwargs):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def start(self, *args):
-        pass
+        raise NotImplementedError
 
     @abstractmethod
     def init(self, *args, **kwargs):
-        pass
+        raise NotImplementedError
 
     # endregion