Implemented layer elements

Added a brush layer element
Corsair - Added ST100 RGB layout

src/Artemis.Storage/Entities/Profile/LayerElementEntity.cs

@@ -4,6 +4,8 @@ namespace Artemis.Storage.Entities.Profile
 {
     public class LayerElementEntity
     {
-        public Guid Id { get; set; }
+        public Guid PluginGuid { get; set; }
+        public string LayerElementType { get; set; }
+        public string Configuration { get; set; }
     }
 }

src/Artemis.Storage/Entities/Profile/LayerEntity.cs

@@ -15,7 +15,6 @@ namespace Artemis.Storage.Entities.Profile
 
         public Guid Id { get; set; }
         public Guid ParentId { get; set; }
-        public Guid LayerTypeGuid { get; set; }
 
         public int Order { get; set; }
         public string Name { get; set; }