Default CODE_SIGN_IDENTITY

[dpfannenstiel]

As a Developer I want to ensure that my build scripts work from a clean installation of the project, Xcodegen is a critical component of that process.

With the release of Mac Catalyst, the default signing identity certificates have been renamed from "iPhone Developer" to "Apple Development" so that a single certificate now covers both iOS and Mac signing.

Not updating the CODE_SIGN_IDENTITY build setting can result in failed builds.

The application_iOS.yml should be updated to reflect this change the default signing.

[patriknyblad]

We just experienced an issue with this in our project where we set the CODE_SIGN_IDENTITY on the project level which works fine for all our targets (watch, live activities, notification extension, app clips) except iOS targets which seem to get a bit of special treatment by xcodegen as it defaults to filling the CODE_SIGN_IDENTITY entry with the old "iPhone Developer". This meant we had to set this explicitly again for our iOS target.

I guess that this might be some old fallback behavior to ensure wider compatibility but it's become a bit dated and it would be nice if that part of the logic can be removed to make the generated configuration cleaner.