"run task" and "debug task" shortcuts only appear when task name is a string literal

The following will be decorated with the "run task" and "debug task" shortcuts
```csharp
Task("GenerateReport")
.Does(TestTasks.GenerateReport);
```

However this will not:
```csharp
Task(nameof(TestTasks.GenerateReport))
.Does(TestTasks.GenerateReport);
```

Start by reproducing the shortcut detection behavior in the VS Code extension with the two C# task declarations shown. Trace the task-name recognition entry point and make the issue's "nameof(TestTasks.GenerateReport)" form receive the same run and debug shortcuts as the string-literal form.

Written by the indexing model from the issue text.