Rule Request: Enforce bundle parameter to NSLocalizedString

[lilyball]

New Issue Checklist

• Updated SwiftLint to the latest version
• I searched for existing GitHub issues

New rule request

When writing frameworks that have localized strings, it's really easy to forget the bundle: parameter to NSLocalizedString. Unfortunately this isn't something that can be solved in code; adding my own override of NSLocalizedString for the bundle-less case trips up genstrings, and adding a custom function with a different name isn't compatible with xcodebuild -exportLocalizations.

The goal of the rule here is to catch all calls to NSLocalizedString and enforce that the bundle: parameter is present. It doesn't matter what the value is, it should just be specified.

This would be opt-in. I don't think there's any configuration for it.

[marcelofabri]

This seems a great candidate for a first contribution! 💯