Adding External Streaming Job I/O validation to DacFxService (#1106)

* checkpoint

* Not having cake, nor eating it

* Working

* Swapping external dll for nupkg

* Extracting statement out of full TSQL

* Improving error message

* Fixing filename capitalization

* Reverting csproj changes

* Adding updated sr.cs file

* VS lost tracking on strings file?

* PR feedback

* resx additions

* More updated string files

* Swapped nuget for dll

* Revert "Swapped nuget for dll"

This reverts commit 6013f3fadf58ebc7e3590a46811d9fd9fc3eaa4a.

* Bumped netcore version to pull in support for extern aliasing nugets

src/Microsoft.SqlTools.ServiceLayer/DacFx/Contracts/ValidateStreamingJobParams.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 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 Validate Streaming Job request.
+    /// </summary>
+    public class ValidateStreamingJobParams
+    {
+        /// <summary>
+        /// Gets or sets the package file path
+        /// </summary>
+        public string PackageFilePath { get; set; }
+
+        /// <summary>
+        /// Gets or sets the create streaming job TSQL.  Should not be used if Statement is set.
+        /// </summary>
+        public string CreateStreamingJobTsql { get; set;}
+    }
+
+    /// <summary>
+    /// Parameters returned from a DacFx validate streaming job request.
+    /// </summary>
+    public class ValidateStreamingJobResult : ResultStatus
+    {
+        
+    }
+
+    /// <summary>
+    /// Defines the DacFx validate streaming job request type
+    /// </summary>
+    class ValidateStreamingJobRequest
+    {
+        public static readonly RequestType<ValidateStreamingJobParams, ValidateStreamingJobResult> Type =
+            RequestType<ValidateStreamingJobParams, ValidateStreamingJobResult>.Create("dacfx/validateStreamingJob");
+    }
+}