Add Cors handling to Blazor UI

eNavigator/eNavigatorUI/Interfaces/IMarketDataServiceClient.cs

@@ -5,6 +5,7 @@ namespace eNavigator.Interfaces
   public interface IMarketDataServiceClient
   {
     public Task<bool> Ping();
+    public Task<ServiceResult> GetSystemInfo();
     public Task<ServiceResult> Login(String user, String password);
     public Task<bool> IsAuthorized();
     public Task<ServiceResult> GetDistinctConsumerPriceIndices();