Feature Request: Refactor - Extract Method

[scorpionlion]

Summary of the new feature
'As a developer I want a script segment to be extracted out as a function so that function can be used in other scripts files as well.'

Proposed technical implementation details (optional)
This is common functionality provided in VS code
https://code.visualstudio.com/docs/editor/refactoring
https://refactoring.com/catalog/extractFunction.html

[dmoka]

I would love to have this!

[ravager-dk]

I second this.