[Feature] SKU recommendations in SQL migration extension (#1399)

* Initial check in for SQL migration SKU recommendation feature (#1362)

Co-authored-by: Raymond Truong <ratruong@microsoft.com>

* Integration test for Get SKU Recommendation. (#1377)

* Integration test for Get SKU Recommendation.

* Addressing comments -
1) Moving sample files to data folder.
2) Changed Assert for Positive Justification. Ideally for MI we are expecting ~6 justifications but this might change so sticking with 'recommendation should have atleast one positive justification'.

* Implement start/stop perf data collection (#1369)

* Add SqlInstanceRequirements to SKU recommendation output (#1378)

* test for data collection start and stop (#1395)

* improve error handling, add RefreshPerfDataCollection  (#1393)

* WIP - refresh data collection

* Capture messages before logging

* Update Microsoft.SqlServer.Migration.Assessment NuGet version (#1402)

* Update NuGet version to 1.0.20220208.23, update assessment metadata

* Update SKU recommendation metadata

* Include preview SKUs

* Clear message/error queue after refreshing

* Clean up

* Add 'IsCollecting' to RefreshPerfDataCollection (#1405)

Co-authored-by: Neetu Singh <23.neetu@gmail.com>

src/Microsoft.SqlTools.ServiceLayer/Migration/Contracts/PerfDataCollectionRequest.cs

@@ -0,0 +1,112 @@
+//
+// 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 System;
+using System.Collections.Generic;
+
+namespace Microsoft.SqlTools.ServiceLayer.Migration.Contracts
+{
+    public class StartPerfDataCollectionParams
+    {
+        /// <summary>
+        /// Uri identifier for the connection
+        /// </summary>
+        public string OwnerUri { get; set; }
+
+        /// <summary>
+        /// Folder from which collected performance data will be written to
+        /// </summary>
+        public string DataFolder { get; set; }
+
+        /// <summary>
+        /// Interval at which performance data will be collected, in seconds
+        /// </summary>
+        public int PerfQueryIntervalInSec { get; set; }
+
+        /// <summary>
+        /// Interval at which static (common) data will be collected, in seconds
+        /// </summary>
+        public int StaticQueryIntervalInSec { get; set; }
+
+        /// <summary>
+        /// Number of iterations of performance data collection to run before aggregating and saving to disk
+        /// </summary>
+        public int NumberOfIterations { get; set; }
+    }
+
+    public class StopPerfDataCollectionParams
+    {
+        // TO-DO: currently stop data collection doesn't require any parameters
+    }
+
+    public class RefreshPerfDataCollectionParams
+    {
+        /// <summary>
+        /// The last time data collection status was refreshed
+        /// </summary>
+        public DateTime LastRefreshedTime { get; set; }
+    }
+
+    public class StartPerfDataCollectionResult
+    {
+        /// <summary>
+        /// The time data collection started
+        /// </summary>
+        public DateTime DateTimeStarted { get; set; }
+    }
+
+    public class StopPerfDataCollectionResult
+    {
+        /// <summary>
+        /// The time data collection stopped
+        /// </summary>
+        public DateTime DateTimeStopped { get; set; }
+    }
+
+    public class RefreshPerfDataCollectionResult
+    {
+        /// <summary>
+        /// List of status messages captured during data collection
+        /// </summary>
+        public List<string> Messages { get; set; }
+
+        /// <summary>
+        /// List of error messages captured during data collection
+        /// </summary>
+        public List<string> Errors { get; set; }
+
+        /// <summary>
+        /// The last time data collecton status was refreshed
+        /// </summary>
+        public DateTime RefreshTime { get; set; }
+
+        /// <summary>
+        /// Whether or not data collection is currently running
+        /// </summary>
+        public bool IsCollecting { get; set; }
+    }
+
+    public class StartPerfDataCollectionRequest
+    {
+        public static readonly
+            RequestType<StartPerfDataCollectionParams, StartPerfDataCollectionResult> Type =
+                RequestType<StartPerfDataCollectionParams, StartPerfDataCollectionResult>.Create("migration/startperfdatacollection");
+    }
+
+    public class StopPerfDataCollectionRequest
+    {
+        public static readonly
+            RequestType<StopPerfDataCollectionParams, StopPerfDataCollectionResult> Type =
+                RequestType<StopPerfDataCollectionParams, StopPerfDataCollectionResult>.Create("migration/stopperfdatacollection");
+    }
+
+    public class RefreshPerfDataCollectionRequest
+    {
+        public static readonly
+            RequestType<RefreshPerfDataCollectionParams, RefreshPerfDataCollectionResult> Type =
+                RequestType<RefreshPerfDataCollectionParams, RefreshPerfDataCollectionResult>.Create("migration/refreshperfdatacollection");
+    }
+}