Devices - Implemented device image loading

Devices - LED image loading WIP

src/Artemis.Storage/Entities/Surface/DeviceEntity.cs

@@ -20,6 +20,9 @@ namespace Artemis.Storage.Entities.Surface
         public double BlueScale { get; set; }
         public bool IsEnabled { get; set; }
 
+        public string PhysicalLayout { get; set; }
+        public string LogicalLayout { get; set; }
+        
         public List<DeviceInputIdentifierEntity> InputIdentifiers { get; set; }
     }