Add support for create function, class or parameter code actions depending on context

[luabud]

It'd be nice Pylance could displayed refactoring code actions depending on the context. For example:

def foo():
    return x  # <--- 💡Create parameter x

a = MyClass # <--- 💡 Create class MyClass

b = bla() # <---- 💡 Create function bla()

[luabud]

Related to microsoft/vscode-python#2653

[MartinBernstorff]

This would be an enormous improvement on my workflow; any news here? :-)

[judej]

Thanks for input in this discussion. We have added this item to our backlog. Check this #5368 issue to track progress.
thanks!