Plugins - Reworked most of the activation logic

src/Artemis.Storage/Entities/Plugins/PluginEntity.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 
 namespace Artemis.Storage.Entities.Plugins
 {
@@ -9,5 +10,16 @@ namespace Artemis.Storage.Entities.Plugins
     {
         public Guid Id { get; set; }
         public bool IsEnabled { get; set; }
+
+        public List<PluginImplementationEntity> Implementations { get; set; }
+    }
+
+    /// <summary>
+    ///     Represents the configuration of a plugin implementation, each implementation has one configuration
+    /// </summary>
+    public class PluginImplementationEntity
+    {
+        public string Type { get; set; }
+        public bool IsEnabled { get; set; }
     }
 }