Kapt3: Write stub class files with metadata (needed for incremental compilation)

compiler/testData/codegen/light-analysis/annotations/annotatedEnumEntry.txt

@@ -1,7 +1,9 @@
+@kotlin.Metadata
 public final class AnnotatedEnumEntryKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
 }
 
+@kotlin.Metadata
 public enum class E {
     public final static @First field E1: E
     public final static @Second field E2: E
@@ -12,6 +14,7 @@ public enum class E {
 }
 
 @First
+@kotlin.Metadata
 final static class E/E1 {
     inner class E/E1
     method <init>(p0: java.lang.String, p1: int): void
@@ -20,10 +23,12 @@ final static class E/E1 {
 
 @kotlin.annotation.Retention
 @java.lang.annotation.Retention
+@kotlin.Metadata
 public annotation class First
 
 @kotlin.annotation.Retention
 @java.lang.annotation.Retention
+@kotlin.Metadata
 public annotation class Second {
     public abstract method value(): java.lang.String
 }