backend/tests: Add blackbox tests from Kotlin JVM

Added tests from testData/codegen/box directory. There are blackbox tests
in other directories and they are to be added.

backend.native/tests/external/codegen/blackbox/javaInterop/objectMethods/cloneCallsSuper.kt

@@ -0,0 +1,14 @@
+// TODO: muted automatically, investigate should it be ran for JS or not
+// IGNORE_BACKEND: JS
+
+data class A(var x: Int) : Cloneable {
+    public override fun clone(): A = super.clone() as A
+}
+
+fun box(): String {
+    val a = A(42)
+    val b = a.clone()
+    if (a != b) return "Fail equals"
+    if (a === b) return "Fail identity"
+    return "OK"
+}