gh-47655: Add support for user data and detail of Tk events to tkinter (GH-7142)

Expose the %d substitution as the tkinter.Event attributes:

* "detail" for Enter, Leave, FocusIn, FocusOut, and ConfigureRequest events
* "user_data" for virtual events

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>