Add frame diagnostics to DevTools Events

[stevemonaco]

Is your feature request related to a problem? Please describe.

When debugging event interactions, especially rendering issues, being able to determine which events happened before and after a particular frame was rendered would be helpful.

See the insertion adorner example below for a case where jerky behavior might be more easily debugged if I knew which frames problematic events were before/after. I've already debugged this through intuition and some guesswork.

Describe the solution you'd like

Add a frame count to DevTools Events for each event, similar to what the FPS Overlay does.

Describe alternatives you've considered

No response

Additional context

There are some considerations here with async events which last multiple frames. Potentially requiring the frame counter to be stored at every stop in a RoutedEvent or at least the starting/ending frame for multiple frame events.