Access modifiers on imports in generated files

[czechboy0]

Motivation

Starting in Swift 6.0, users can set InternalImportsByDefault as an upcoming feature flag, which makes imports internal by default. Then, if they add accessModifier: package/public, the code fails to build.

Proposed solution

There should be some way to get the access modifier added on the imports as well.

One way: put if #compiler(>=6.0) around imports with the access modifier, and #else won't have it. That way we can do it without other feature flags.

Alternatives considered

No response

Additional information

No response