Update the position count and initiator

src/Managing.Application.Abstractions/Repositories/ITradingRepository.cs

@@ -25,6 +25,7 @@ public interface ITradingRepository
     Task<Position> GetPositionByIdentifierAsync(Guid identifier);
     Task<IEnumerable<Position>> GetPositionsAsync(PositionInitiator positionInitiator);
     Task<IEnumerable<Position>> GetPositionsByStatusAsync(PositionStatus positionStatus);
+    Task<IEnumerable<Position>> GetPositionsByInitiatorIdentifierAsync(Guid initiatorIdentifier);
     Task<IEnumerable<Position>> GetAllPositionsAsync();
 
     Task UpdateScenarioAsync(Scenario scenario);