Swap out existing code in new widget

The refactoring assistant provided by the plugin should be extended by the functionality to move existing code into a new widget in a new file. This would speed up the refactoring process immensely, by removing the need to write the boiler plate code and copy the existing functionality.

Start by tracing the plugin's refactoring assistant and its existing widget-extraction flow. Determine how a selected block of existing code could be moved into a new widget and new file, then verify that the generated boilerplate and moved functionality match the requested behavior.

Written by the indexing model from the issue text.