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/reified/newArrayInt.kt

@@ -0,0 +1,16 @@
+// TODO: muted automatically, investigate should it be ran for JS or not
+// IGNORE_BACKEND: JS
+
+// WITH_RUNTIME
+
+inline fun<reified T> createArray(n: Int, crossinline block: () -> T): Array<T> {
+    return Array<T>(n) { block() }
+}
+
+fun box(): String {
+
+    val x = createArray<Int>(5) { 3 }
+
+    assert(x.all { it == 3 })
+    return "OK"
+}