Test projects are working.

Vector3Visualizer/Vector3DebuggerVisualizerProvider.cs

@@ -0,0 +1,33 @@
+using Microsoft.VisualStudio.Extensibility;
+using Microsoft.VisualStudio.Extensibility.DebuggerVisualizers;
+using Microsoft.VisualStudio.RpcContracts.RemoteUI;
+using System.Collections.Generic;
+using System.Numerics;
+using System.Threading;
+using System.Threading.Tasks;
+using Vector3VisualizerSource;
+namespace Vector3Visualizer;
+
+[VisualStudioContribution]
+internal sealed class Vector3DebuggerVisualizerProvider : DebuggerVisualizerProvider
+{
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("ConstantExpressionEvaluator", "CEE0027:String not localized", Justification = "<Pending>")]
+    public override DebuggerVisualizerProviderConfiguration DebuggerVisualizerProviderConfiguration => new(
+    [
+        new VisualizerTargetType("Vector3 Visualizer", "System.Numerics.Vector3, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e"),
+        new VisualizerTargetType("Vector3[] Visualizer", typeof(Vector3[])),
+        new VisualizerTargetType("List<Vector3> Visualizer", typeof(List<>)),
+        new VisualizerTargetType("Quaternion Visualizer", typeof(Quaternion))
+    ])
+    {
+        VisualizerObjectSourceType = new VisualizerObjectSourceType(typeof(Vector3ObjectSource)),
+        Style = VisualizerStyle.ToolWindow,
+    };
+
+    public override async Task<IRemoteUserControl> CreateVisualizerAsync(VisualizerTarget visualizerTarget, CancellationToken cancellationToken)
+    {
+        Vector3Model? model = await visualizerTarget.ObjectSource.RequestDataAsync<Vector3Model?>(jsonSerializer: null, CancellationToken.None);
+        return await Task.FromResult<IRemoteUserControl>(new Vector3VisualizerUserControl(model));
+        //return await Task.FromResult<IRemoteUserControl>(new MyRemoteUserControl(model));
+    }
+}