Add project files.

Core.Blueprint.Domain/Entities/BlueprintCollection.cs

@@ -0,0 +1,15 @@
+using Core.Blueprint.Domain.Shared;
+using MongoDB.Bson;
+using MongoDB.Bson.Serialization.Attributes;
+
+namespace Core.Blueprint.Domain.Entities
+{
+    [CollectionAttributeName("blueprint")]
+    public class BlueprintCollection : AbsEntity
+    {
+        public Guid CorrelationId { get; set; }
+
+        public DateTime Created { get; set; }
+
+    }
+}