Allow args to be defined from "user input" by using command.extention

From @mike-pt on January 30, 2017 23:14

While discussing the ability to get user input to define program or args (see vscode#9544 ) I noticed I could do this with the python debugger for “args”.

Since args expects an array not a strings this is at the moment impossible, however if args would be changed to string and (as suggested in the GHI) the Pyhton Debbuger impletments its own ${command.extension.python-debug.getCommandline} we could easy promt the “user” for args, this would be very handy when testing an appp for a bunch of different scenarios that change according to those args.

Please consider this as a FR

Copied from original issue: DonJayamanne/pythonVSCode#684

[brettcannon]

We are planning to solve this by helping users to attach to a running Python process, so you can start Python how you want and then post-launch attach to it (#1182 ).

[DonJayamanne]

From @mike-pt on June 5, 2017 18:48

Any idea if this is still going to land soon?