Describe your problem or use case

When a callback is fired due to a change in App or SyncUser, it could be useful if the event is part of the callback. It will help the app develoer to know how to react to the change.

Describe the solution you'd like

user.subscribe([=](const realm::SyncUserChangeEvent event, const realm::SyncUser& user) { /* ... */ });
app.subscribe([=](const realm::AppChangeEvent event, const realm::app::App& app) { /* ... */ });

Additional context