feat(api): StatRabbitMqController GetConnectionStats добавлен параметр ThresholdConnections, вынесен в настройки

PARR.API/Settings/MonitoringSettings.cs

@@ -3,6 +3,8 @@
     public class MonitoringSettings
     {
         public List<MonitoringRobotSettings> Robots { get; set; } = new List<MonitoringRobotSettings>();
+
+        public MonitoringRabbitMq? RabbitMq { get; set; }
     }
 
     public class MonitoringRobotSettings
@@ -11,4 +13,12 @@
 
         public TimeSpan InaccessibilityTime { get; set; }
     }
+
+    public class MonitoringRabbitMq
+    {
+        /// <summary>
+        /// Кол-во подключений к RabbitMq, если меньше, то алярм
+        /// </summary>
+        public int ThresholdConnections { get; set; }
+    }
 }