Everything in the same project

- Build in intrinsic commands as part of dotnet

src/dotnet/commands/dotnet-projectmodel-server/Models/DiagnosticMessageGroup.cs

@@ -0,0 +1,25 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System.Collections.Generic;
+using NuGet.Frameworks;
+
+namespace Microsoft.DotNet.ProjectModel.Server.Models
+{
+    public class DiagnosticMessageGroup
+    {
+        public DiagnosticMessageGroup(IEnumerable<DiagnosticMessage> diagnostics)
+            : this(framework: null, diagnostics: diagnostics)
+        { }
+
+        public DiagnosticMessageGroup(NuGetFramework framework, IEnumerable<DiagnosticMessage> diagnostics)
+        {
+            Framework = framework;
+            Diagnostics = diagnostics;
+        }
+
+        public IEnumerable<DiagnosticMessage> Diagnostics { get; }
+
+        public NuGetFramework Framework { get; }
+    }
+}