JVM_IR: move serialized IR to a separate annotation

libraries/stdlib/jvm/runtime/kotlin/jvm/internal/SerializedIr.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.jvm.internal
+
+/**
+ * This annotation is used to store serialized IR data inside classfiles.
+ */
+@Retention(AnnotationRetention.BINARY)
+@Target(AnnotationTarget.CLASS)
+@SinceKotlin("1.6")
+annotation class SerializedIr(
+    @get:JvmName("b")
+    val bytes: Array<String> = []
+)

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib-runtime-merged.txt

@@ -4038,6 +4038,10 @@ public class kotlin/jvm/internal/ReflectionFactory {
 public abstract interface annotation class kotlin/jvm/internal/RepeatableContainer : java/lang/annotation/Annotation {
 }
 
+public abstract interface annotation class kotlin/jvm/internal/SerializedIr : java/lang/annotation/Annotation {
+	public abstract fun b ()[Ljava/lang/String;
+}
+
 public final class kotlin/jvm/internal/ShortCompanionObject {
 	public static final field INSTANCE Lkotlin/jvm/internal/ShortCompanionObject;
 	public static final field MAX_VALUE S