Add support for getting DacFx deploy options from a publish profile (#995)

* add support for getting options from a publish profile

* update comments

* set values for default options if they aren't specified in the publish profile

* addressing comments

src/Microsoft.SqlTools.ServiceLayer/DacFx/Contracts/GetOptionsFromProfileRequest.cs

@@ -0,0 +1,39 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+using System.Collections.Generic;
+using Microsoft.SqlTools.Hosting.Protocol.Contracts;
+using Microsoft.SqlTools.ServiceLayer.SchemaCompare.Contracts;
+using Microsoft.SqlTools.ServiceLayer.Utility;
+
+namespace Microsoft.SqlTools.ServiceLayer.DacFx.Contracts
+{
+    /// <summary>
+    /// Parameters for a DacFx get options from profile request.
+    /// </summary>
+    public class GetOptionsFromProfileParams
+    {
+        /// <summary>
+        /// Gets or sets the profile path
+        /// </summary>
+        public string ProfilePath { get; set; }
+    }
+
+    /// <summary>
+    /// Parameters returned from a DacFx get options from profile request.
+    /// </summary>
+    public class DacFxOptionsResult : ResultStatus
+    {
+        public DeploymentOptions DeploymentOptions { get; set; }
+    }
+
+    /// <summary>
+    /// Defines the DacFx get options from profile request type
+    /// </summary>
+    class GetOptionsFromProfileRequest
+    {
+        public static readonly RequestType<GetOptionsFromProfileParams, DacFxOptionsResult> Type =
+            RequestType<GetOptionsFromProfileParams, DacFxOptionsResult>.Create("dacfx/getOptionsFromProfile");
+    }
+}