Add a "Wrap with builder" assist that works like "Wrap with widget" #1890
Description
Use case
The refactor menu in VSCode has basic widgets.
I want to be able to wrap my widget in a BlocBuilder widget directly or any other widget other than the default widgets
Proposal
I think there should a JSON format or similar way for adding more widgets to the refactor menu and asks for an array of parameters like bloc state class, bloc event class, etc.
