Add reason when stopping bot

src/Managing.Application.Abstractions/Grains/ILiveTradingBotGrain.cs

@@ -28,7 +28,7 @@ public interface ILiveTradingBotGrain : IGrainWithGuidKey
 
     Task CreateAsync(TradingBotConfig config, User user);
     Task StartAsync();
-    Task StopAsync();
+    Task StopAsync(string reason);
 
     Task<bool> UpdateConfiguration(TradingBotConfig newConfig);
     Task<Account> GetAccount();