Adding server metadata to SQL Migration Assessment API (#1222)

* WIP

* Adding server metdata to assessment call

* Fixed spacing

* Sorted imports
Added copyright header
Changes some class names
Fixed description

* Fixed assessment result and removing unused imports

* Adding assessment result

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

@@ -0,0 +1,133 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlServer.Migration.Assessment.Common.Contracts.TargetAssessment.Models;
+
+namespace Microsoft.SqlTools.ServiceLayer.Migration.Contracts
+{
+    public class ServerAssessmentProperties
+    {
+        /// <summary>
+        /// Name of the server
+        /// </summary>
+        public string Name { get; set; }
+        /// <summary>
+        /// Cpu cores for the server host
+        /// </summary>
+        public long CpuCoreCount { get; set; }
+        /// <summary>
+        /// Server host physical memory size
+        /// </summary>
+        public double PhysicalServerMemory { get; set; }
+        /// <summary>
+        /// Host operating system of the SQL server
+        /// </summary>
+        public string ServerHostPlatform { get; set; }
+        /// <summary>
+        /// Version of the SQL server
+        /// </summary>
+        public string ServerVersion { get; set; }
+        /// <summary>
+        /// SQL server engine edition
+        /// </summary>
+        public string ServerEngineEdition { get; set; }
+        /// <summary>
+        /// SQL server edition
+        /// </summary>
+        public string ServerEdition { get; set; }
+        /// <summary>
+        /// We use this flag to indicate if the SQL server is part of the failover cluster
+        /// </summary>
+        public bool IsClustered { get; set; }
+        /// <summary>
+        /// Returns the total number of dbs assessed
+        /// </summary>
+        public long NumberOfUserDatabases { get; set; }
+        /// <summary>
+        /// Returns the assessment status
+        /// </summary>
+        public int SqlAssessmentStatus { get; set; }
+        /// <summary>
+        /// Count of Dbs assessed
+        /// </summary>
+        public long AssessedDatabaseCount{get; set;}
+        /// <summary>
+        /// Give assessed server stats for SQL MI compatibility
+        /// </summary>
+        public IServerTargetReadiness SQLManagedInstanceTargetReadiness { get; set; }
+        /// <summary>
+        /// Server assessment results
+        /// </summary>
+        public MigrationAssessmentInfo[] Items { get; set; }
+        /// <summary>
+        /// Server assessment errors
+        /// </summary>
+        public ErrorModel[] Errors { get; set; }
+        /// <summary>
+        /// List of databases that are assessed
+        /// </summary>
+        public DatabaseAssessmentProperties[] Databases { get; set; }
+    }
+
+    public class DatabaseAssessmentProperties
+    {
+        /// <summary>
+        /// Name of the database
+        /// </summary>
+        public string Name { get; set; }
+        /// <summary>
+        /// Compatibility level of the database
+        /// </summary>
+        public string CompatibilityLevel { get; set; }
+        /// <summary>
+        /// Size of the database
+        /// </summary>
+        public double DatabaseSize { get; set; }
+        /// <summary>
+        /// Flag that indicates if the database is replicated
+        /// </summary>
+        public bool IsReplicationEnabled { get; set; }
+        /// <summary>
+        /// Time taken for assessing the database
+        /// </summary>
+        public double AssessmentTimeInMilliseconds { get; set; }
+        /// <summary>
+        /// Database Assessment Results
+        /// </summary>
+        public MigrationAssessmentInfo[] Items { get; set; }
+        /// <summary>
+        /// Database assessment errors
+        /// </summary>
+        public ErrorModel[] Errors {get; set;}
+        /// <summary>
+        /// Flags that indicate if the database is ready for migration
+        /// </summary>
+        public IDatabaseTargetReadiness SQLManagedInstanceTargetReadiness { get; set; }
+    }
+
+    public class ErrorModel
+    {
+        /// <summary>
+        /// Id of the assessment error
+        /// </summary>
+        public string ErrorId { get; set; }
+        /// <summary>
+        /// Error message
+        /// </summary>
+        public string Message { get; set; }
+        /// <summary>
+        /// Summary of the Error
+        /// </summary>
+        public string ErrorSummary { get; set; }
+        /// <summary>
+        /// Possible causes for the error
+        /// </summary>
+        public string PossibleCauses { get; set; }
+        /// <summary>
+        /// Possible mitigation for the error
+        /// </summary>
+        public string Guidance { get; set; }
+    }
+}