Introduction of AnnotationTarget.CLASS as a replacement for CLASSIFIER (first step)

core/builtins/src/kotlin/annotation/Annotations.kt

@@ -22,6 +22,7 @@ package kotlin.annotation
 public enum class AnnotationTarget {
     /** Class, interface or object, annotation class is also included */
     CLASSIFIER,
+    CLASS,
     /** Annotation class only */
     ANNOTATION_CLASS,
     /** Generic type parameter (unsupported yet) */