Add an option to turn on `overwrite_screenshots` to Deploy to iTunes Connect


Description of the feature request

Add an option to turn on overwrite_screenshots to Deploy to iTunes Connect.

The only item related to screen shots in Deploy to iTunes Connect is “Skip Screenshots?”.
This will add a screenshot every time. This generates an “Too many screenshots. - has already 10 appScreenshots” error.

fastlane deliver has the option overwrite_screenshots.


Let me turn on the overwrite_screenshots.