display underline for diagnostics

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

@@ -14,6 +14,17 @@ public interface IExpandableSharpIdeNode
 public interface IChildSharpIdeNode
 {
 	public IExpandableSharpIdeNode Parent { get; set; }
+
+	// TODO: Profile/redesign
+	public SharpIdeProjectModel? GetNearestProjectNode()
+	{
+		var current = this;
+		while (current is not SharpIdeProjectModel && current?.Parent is not null)
+		{
+			current = current.Parent as IChildSharpIdeNode;
+		}
+		return current as SharpIdeProjectModel;
+	}
 }
 
 public class SharpIdeSolutionModel : ISharpIdeNode, IExpandableSharpIdeNode