User reproduces the UI jank in their app

If the UI jank is reduced with a rendering layer turned off,
the user should try to optimize their app to use
less clipping/opacity/physical shape effects.
If the UI jank is not reduced,
the user now knows that the performance problem
is not due to these UI effects.

Debugger Updates

Replaced the “Libraries” pane with a “File Explorer” pane -
#3448. The “File
Explorer” pane has two components:

A tree view of the libraries present in your application.
You can use the File Explorer to find and open a library,
or you can use the existing Ctrl/Cmd + P keyboard shortcut
to search for a file.

A new “Outline” view that shows the structure of the selected library.
This view will show classes, members, methods, etc.,
and when an item is selected,
the source view will jump to the respective line of code
for the selected item.