Add ExecuteToggleInlineCommentMarginCommand metric

This counter is incremented when the ToggleInlineCommentMarginCommand
is executed.

Author: jcansdale

src/GitHub.Exports/Models/UsageModel.cs

@@ -71,6 +71,7 @@ public class MeasuresModel
             public int NumberOfStatusBarOpenPullRequestList { get; set; }
             public int NumberOfTeamExplorerHomeOpenPullRequestList { get; set; }
             public int NumberOfNavigateToPullRequestFileDiff { get; set; }
+            public int ExecuteToggleInlineCommentMarginCommand { get; set; }
         }
     }
 }

src/GitHub.InlineReviews/Commands/ToggleInlineCommentMarginCommand.cs

@@ -27,18 +27,23 @@ public class ToggleInlineCommentMarginCommand : VsCommand, IToggleInlineCommentM
 
         readonly Lazy<IVsTextManager> textManager;
         readonly Lazy<IVsEditorAdaptersFactoryService> editorAdapter;
+        readonly Lazy<IUsageTracker> usageTracker;
 
         [ImportingConstructor]
         public ToggleInlineCommentMarginCommand(
             IGitHubServiceProvider serviceProvider,
-            Lazy<IVsEditorAdaptersFactoryService> editorAdapter) : base(CommandSet, CommandId)
+            Lazy<IVsEditorAdaptersFactoryService> editorAdapter,
+            Lazy<IUsageTracker> usageTracker) : base(CommandSet, CommandId)
         {
             textManager = new Lazy<IVsTextManager>(() => serviceProvider.GetService<SVsTextManager, IVsTextManager>());
             this.editorAdapter = editorAdapter;
+            this.usageTracker = usageTracker;
         }
 
         public override Task Execute()
         {
+            usageTracker.Value.IncrementCounter(x => x.ExecuteToggleInlineCommentMarginCommand);
+
             IVsTextView activeView = null;
             if (textManager.Value.GetActiveView(1, null, out activeView) == VSConstants.S_OK)
             {