Added status code for TDE result (#1975)

This PR updates TDE NuGet and makes code changes to support the introduction of "StatusCode" being returned from NuGet.

src/Microsoft.SqlTools.Migration/MigrationService.cs

@@ -965,7 +965,8 @@ namespace Microsoft.SqlTools.Migration
                 {
                     Name = dbName,
                     Success = migrationResult.Success,
-                    Message = migrationResult.Message
+                    Message = migrationResult.Message,
+                    StatusCode = migrationResult.StatusCode
                 };
                 await requestContext.SendEvent(CertificateMigrationProgressEvent.Type, eventData);