Update the position count and initiator

src/Managing.Application.Abstractions/Services/ITradingService.cs

@@ -36,6 +36,7 @@ public interface ITradingService
     Task UpdateIndicatorAsync(IndicatorBase indicatorBase);
     Task<IEnumerable<Position>> GetBrokerPositions(Account account);
     Task<IEnumerable<Position>> GetAllDatabasePositionsAsync();
+    Task<IEnumerable<Position>> GetPositionsByInitiatorIdentifierAsync(Guid initiatorIdentifier);
     Task<PrivyInitAddressResponse> InitPrivyWallet(string publicAddress);
 
     // Synth API integration methods