Feature/schemacompare scmp save (#824)

* First cut of scmp Save related changes and some test refactoring

* Adding Exclude/Include objects in saving

* Add diff entry validation as part of test

* Adding PR comments - major change is change to nameparts in place of name hence preserving any "."/"[" in name and avoiding any string operations

* One more UT scenario addition for create excluded object

src/Microsoft.SqlTools.ServiceLayer/SchemaCompare/Contracts/SchemaCompareRequest.cs

@@ -88,12 +88,14 @@ namespace Microsoft.SqlTools.ServiceLayer.SchemaCompare.Contracts
         public SchemaUpdateAction UpdateAction { get; set; }
         public SchemaDifferenceType DifferenceType { get; set; }
         public string Name { get; set; }
-        public string SourceValue { get; set; }
-        public string TargetValue { get; set; }
+        public string[] SourceValue { get; set; }
+        public string[] TargetValue { get; set; }
         public DiffEntry Parent { get; set; }
         public List<DiffEntry> Children { get; set; }
         public string SourceScript { get; set; }
         public string TargetScript { get; set; }
+        public string SourceObjectType { get; set; }
+        public string TargetObjectType { get; set; }
     }
 
     /// <summary>

src/Microsoft.SqlTools.ServiceLayer/SchemaCompare/Contracts/SchemaCompareSaveScmpRequest.cs

@@ -0,0 +1,35 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlTools.Hosting.Protocol.Contracts;
+using Microsoft.SqlTools.ServiceLayer.Utility;
+
+namespace Microsoft.SqlTools.ServiceLayer.SchemaCompare.Contracts
+{
+    internal class SchemaCompareSaveScmpParams : SchemaCompareParams
+    {
+        /// <summary>
+        /// Gets or sets the File Path for scmp
+        /// </summary>
+        public string ScmpFilePath { get; set; }
+
+        /// <summary>
+        /// Excluded source objects
+        /// </summary>
+        public SchemaCompareObjectId[] ExcludedSourceObjects { get; set; }
+
+        /// <summary>
+        /// Excluded Target objects
+        /// </summary>
+        public SchemaCompareObjectId[] ExcludedTargetObjects { get; set; }
+    }
+
+    internal class SchemaCompareSaveScmpRequest
+    {
+        public static readonly RequestType<SchemaCompareSaveScmpParams, ResultStatus> Type =
+    RequestType<SchemaCompareSaveScmpParams, ResultStatus>.Create("schemaCompare/saveScmp");
+    }
+
+}