add local variable test. This test runs box() method and checks local variable types and names avaiable at every step.

compiler/testData/debug/localVariables/localFun.kt

@@ -0,0 +1,16 @@
+//FILE: test.kt
+
+fun foo() {
+    fun bar()  {
+    }
+}
+
+fun box() {
+    foo()
+}
+// IGNORE_BACKEND: JVM_IR
+// LOCAL VARIABLES
+// TestKt:9:
+// TestKt:4: $fun$bar$1:TestKt$foo$1
+// TestKt:6: $fun$bar$1:TestKt$foo$1
+// TestKt:10: