JVM_IR indy-SAM conversions, 1st passing tests

KT-44278 KT-26060 KT-42621

compiler/testData/codegen/box/invokedynamic/sam/simpleIndyFunInterface.kt

@@ -0,0 +1,18 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+
+fun interface KRunnable {
+    fun run()
+}
+
+fun runIt(r: KRunnable) {
+    r.run()
+}
+
+var test = "Failed"
+
+fun box(): String {
+    runIt { test = "OK" }
+    return test
+}