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

compiler/testData/codegen/light-analysis/jvmStatic/inlinePropertyAccessors.txt

@@ -1,3 +1,4 @@
+@kotlin.Metadata
 public final class Foo {
     public final static field INSTANCE: Foo
     private final static field a: java.lang.String
@@ -6,6 +7,7 @@ public final class Foo {
     public final method foo(): void
 }
 
+@kotlin.Metadata
 public final class InlinePropertyAccessorsKt {
     private static @org.jetbrains.annotations.NotNull field result: java.lang.String
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String