add aspire for otel

src/SharpIDE.Application/Features/SolutionDiscovery/VsPersistence/IntermediateMapper.cs

@@ -1,4 +1,5 @@
-using Ardalis.GuardClauses;
+using System.Diagnostics;
+using Ardalis.GuardClauses;
 using Microsoft.VisualStudio.SolutionPersistence.Model;
 using Microsoft.VisualStudio.SolutionPersistence.Serializer;
 
@@ -9,6 +10,7 @@ public static class IntermediateMapper
 	internal static async Task<IntermediateSolutionModel> GetIntermediateModel(string solutionFilePath,
 		CancellationToken cancellationToken = default)
 	{
+		using var _ = SharpIdeOtel.Source.StartActivity();
 		var serializer = SolutionSerializers.GetSerializerByMoniker(solutionFilePath);
 		Guard.Against.Null(serializer, nameof(serializer));
 		var vsSolution = await serializer.OpenAsync(solutionFilePath, cancellationToken);

src/SharpIDE.Application/Features/SolutionDiscovery/VsPersistence/VsPersistenceMapper.cs

@@ -6,6 +6,7 @@ public static class VsPersistenceMapper
 {
 	public static async Task<SharpIdeSolutionModel> GetSolutionModel(string solutionFilePath, CancellationToken cancellationToken = default)
 	{
+		using var _ = SharpIdeOtel.Source.StartActivity();
 		var timer = Stopwatch.StartNew();
 		// This intermediate model is pretty much useless, but I have left it around as we grab the project nodes with it, which we might use later.
 		var intermediateModel = await IntermediateMapper.GetIntermediateModel(solutionFilePath, cancellationToken);

src/SharpIDE.Application/SharpIdeOtel.cs

@@ -0,0 +1,10 @@
+using System.Diagnostics;
+using System.Diagnostics.Metrics;
+
+namespace SharpIDE.Application;
+
+public static class SharpIdeOtel
+{
+	public static readonly ActivitySource Source = new("SharpIde");
+	public static readonly Meter Meter = new("SharpIde");
+}