adding metadata to object explorer node info (#320)

* adding metadata to oe node info

src/Microsoft.SqlTools.ServiceLayer/ObjectExplorer/Contracts/NodeInfo.cs

@@ -3,6 +3,8 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 //
 
+using Microsoft.SqlTools.ServiceLayer.Metadata.Contracts;
+
 namespace Microsoft.SqlTools.ServiceLayer.ObjectExplorer.Contracts
 {
     /// <summary>
@@ -36,5 +38,10 @@ namespace Microsoft.SqlTools.ServiceLayer.ObjectExplorer.Contracts
         /// is it expandable?
         /// </summary>
         public bool IsLeaf { get; set; }
+
+        /// <summary>
+        /// Object Metadata for smo objects to be used for scripting
+        /// </summary>
+        public ObjectMetadata Metadata { get; set; }
     }
 }