Add DacFx Generate Deploy Script operation (#759)

* Adding DacFx Generate Deploy Script operation

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

@@ -0,0 +1,40 @@
+//
+// 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.TaskServices;
+using Microsoft.SqlTools.ServiceLayer.Utility;
+
+namespace Microsoft.SqlTools.ServiceLayer.DacFx.Contracts
+{
+    /// <summary>
+    /// Parameters for a DacFx generate deploy script request.
+    /// </summary>
+    public class GenerateDeployScriptParams : DacFxParams
+    {
+        /// <summary>
+        /// Gets or sets the filepath where to save the generated script
+        /// </summary>
+        public string ScriptFilePath { get; set; }
+
+        /// <summary>
+        /// Gets or sets whether a Deployment Report should be generated during deploy.
+        /// </summary>
+        public bool GenerateDeploymentReport { get; set; }
+
+        /// <summary>
+        /// Gets or sets the filepath where to save the deployment report
+        /// </summary>
+        public string DeploymentReportFilePath { get; set; }
+    }
+
+    /// <summary>
+    /// Defines the DacFx generate deploy script request type
+    /// </summary>
+    class GenerateDeployScriptRequest
+    {
+        public static readonly RequestType<GenerateDeployScriptParams, DacFxResult> Type =
+            RequestType<GenerateDeployScriptParams, DacFxResult>.Create("dacfx/generateDeploymentScript");
+    }
+}