[Tests] Migrate backend-independent tests from native to compiler/testData.

^KT-65979

compiler/testData/codegen/box/basics/local_variable.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+// WITH_STDLIB
+import kotlin.test.*
+
+fun local_variable(a: Int) : Int {
+  var b = 0
+  b = a + 11
+  return b
+}
+
+fun box(): String {
+  if (local_variable(3) != 14) throw Error()
+  return "OK"
+}