JVM_IR indy-lambdas: initial implementation and tests

KT-44278 KT-26060 KT-42621

compiler/testData/codegen/box/invokedynamic/lambdas/extensionLambda.kt

@@ -0,0 +1,12 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// LAMBDAS: INDY
+
+class C(val x: String)
+
+fun boxLambda(lambda: C.() -> String) = lambda
+
+fun box(): String {
+    val ext = boxLambda { x }
+    return C("OK").ext()
+}