DacFx import/export (#728)

Adding DacFx import/export/deploy/extract functionality

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

@@ -0,0 +1,44 @@
+//
+// 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 request.
+    /// </summary>
+    public abstract class DacFxParams : IScriptableRequestParams
+    {
+        /// <summary>
+        /// Gets or sets package filepath
+        /// </summary>
+        public string PackageFilePath { get; set; }
+
+        /// <summary>
+        /// Gets or sets name for database
+        /// </summary>
+        public string DatabaseName { get; set; }
+
+        /// <summary>
+        /// Connection uri
+        /// </summary>
+        public string OwnerUri { get; set; }
+
+        /// <summary>
+        /// Executation mode for the operation. Default is execution
+        /// </summary>
+        public TaskExecutionMode TaskExecutionMode { get; set; }
+    }
+
+    /// <summary>
+    /// Parameters returned from a DacFx request.
+    /// </summary>
+    public class DacFxResult : ResultStatus
+    {
+        public string OperationId { get; set; }
+    }
+}