Document handling of extensions in ObjCExport
Document handling of extensions in ObjCExport

Co-authored-by: Pavel Semyonov <9fef4c3b275d1b1cf2d37bb4fde2472935675f02@users.noreply.github.com>
JetBrains/kotlin-native,JetBrains/kotlin-native,wiltonlazary/kotlin-native,wiltonlazary/kotlin-native,wiltonlazary/kotlin-native,JetBrains/kotlin-native,wiltonlazary/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,wiltonlazary/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native