Allow Play Button to Run as Module

[samclark2015]

The "Run Python File in Terminal" button is handy if creating plain scripts, but when creating packaged applications, it causes confusion. It attempts to run the current file as a Python script which can cause import errors if using dot-style relative imports.

I suggest the button instead executes the first entry in launch.json in a non-debug session, allowing for configurability over its behavior. If no launch configurations are available, it should fallback to its current behavior.

[karthiknadig]

Thank you for the suggestion! We have marked this issue as "needs decision" to make sure we have a conversation about your idea. We plan to leave this feature request open for at least a month to see how many 👍 votes the opening comment gets to help us make our decision.

[karrtikr]

Closing in favor of #11812.