[K/N][IR][runtime] Implemented lazy per-file initialization strategy

kotlin-native/backend.native/tests/codegen/initializers/workers1.kt

@@ -0,0 +1,34 @@
+/*
+ * 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.
+ */
+
+// FILE: lib.kt
+class X(val s: String)
+
+val x = X("zzz")
+
+// FILE: lib2.kt
+import kotlin.native.concurrent.*
+
+class Z(val x: Int)
+
+@SharedImmutable
+val z1 = Z(42)
+
+val z2 = Z(x.s.length)
+
+// FILE: main.kt
+import kotlin.native.concurrent.*
+
+fun foo() {
+    val worker = Worker.start()
+    worker.execute(TransferMode.SAFE, { -> }, {
+        it -> println(z1.x)
+    }).consume { }
+}
+
+fun main() {
+    foo()
+    println(z2.x)
+}