Feature/batch line info (#56)

* inital pipe of line numbers and getting text from workspace services

* tests compile

* Fixed bug regarding tests using connections on mac

* updated tests

* fixed workspace service and fixed tests

* integrated feedback

src/Microsoft.SqlTools.ServiceLayer/QueryExecution/Contracts/BatchSummary.cs

@@ -20,6 +20,11 @@ namespace Microsoft.SqlTools.ServiceLayer.QueryExecution.Contracts
         /// </summary>
         public int Id { get; set; }
 
+        /// <summary>
+        /// The selection from the file for this batch
+        /// </summary>
+        public SelectionData Selection { get; set; }
+
         /// <summary>
         /// Any messages that came back from the server during execution of the batch
         /// </summary>